Definition of Oscilla. Meaning of Oscilla. Synonyms of Oscilla

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Definition of Oscilla

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Axis of oscillation
Oscillation Os`cil*la"tion, n. [L. oscillatio a swinging.] 1. The act of oscillating; a swinging or moving backward and forward, like a pendulum; vibration. 2. Fluctuation; variation; change back and forth. His mind oscillated, undoubtedly; but the extreme points of the oscillation were not very remote. --Macaulay. Axis of oscillation, Center of oscillation. See under Axis, and Center.
Axis of oscillation
Axis Ax"is, n.; pl. Axes. [L. axis axis, axle. See Axle.] A straight line, real or imaginary, passing through a body, on which it revolves, or may be supposed to revolve; a line passing through a body or system around which the parts are symmetrically arranged. 2. (Math.) A straight line with respect to which the different parts of a magnitude are symmetrically arranged; as, the axis of a cylinder, i. e., the axis of a cone, that is, the straight line joining the vertex and the center of the base; the axis of a circle, any straight line passing through the center. 3. (Bot.) The stem; the central part, or longitudinal support, on which organs or parts are arranged; the central line of any body. --Gray. 4. (Anat.) (a) The second vertebra of the neck, or vertebra dentata. (b) Also used of the body only of the vertebra, which is prolonged anteriorly within the foramen of the first vertebra or atlas, so as to form the odontoid process or peg which serves as a pivot for the atlas and head to turn upon. 5. (Crystallog.) One of several imaginary lines, assumed in describing the position of the planes by which a crystal is bounded. 6. (Fine Arts) The primary or secondary central line of any design. Anticlinal axis (Geol.), a line or ridge from which the strata slope downward on the two opposite sides. Synclinal axis, a line from which the strata slope upward in opposite directions, so as to form a valley. Axis cylinder (Anat.), the neuraxis or essential, central substance of a nerve fiber; -- called also axis band, axial fiber, and cylinder axis. Axis in peritrochio, the wheel and axle, one of the mechanical powers. Axis of a curve (Geom.), a straight line which bisects a system of parallel chords of a curve; called a principal axis, when cutting them at right angles, in which case it divides the curve into two symmetrical portions, as in the parabola, which has one such axis, the ellipse, which has two, or the circle, which has an infinite number. The two axes of the ellipse are the major axis and the minor axis, and the two axes of the hyperbola are the transverse axis and the conjugate axis. Axis of a lens, the straight line passing through its center and perpendicular to its surfaces. Axis of a telescope or microscope, the straight line with which coincide the axes of the several lenses which compose it. Axes of co["o]rdinates in a plane, two straight lines intersecting each other, to which points are referred for the purpose of determining their relative position: they are either rectangular or oblique. Axes of co["o]rdinates in space, the three straight lines in which the co["o]rdinate planes intersect each other. Axis of a balance, that line about which it turns. Axis of oscillation, of a pendulum, a right line passing through the center about which it vibrates, and perpendicular to the plane of vibration. Axis of polarization, the central line around which the prismatic rings or curves are arranged. --Brewster. Axis of revolution (Descriptive Geom.), a straight line about which some line or plane is revolved, so that the several points of the line or plane shall describe circles with their centers in the fixed line, and their planes perpendicular to it, the line describing a surface of revolution, and the plane a solid of revolution. Axis of symmetry (Geom.), any line in a plane figure which divides the figure into two such parts that one part, when folded over along the axis, shall coincide with the other part. Axis of the equator, ecliptic, horizon (or other circle considered with reference to the sphere on which it lies), the diameter of the sphere which is perpendicular to the plane of the circle. --Hutton. Axis of the Ionic capital (Arch.), a line passing perpendicularly through the middle of the eye of the volute. Neutral axis (Mech.), the line of demarcation between the horizontal elastic forces of tension and compression, exerted by the fibers in any cross section of a girder. Optic axis of a crystal, the direction in which a ray of transmitted light suffers no double refraction. All crystals, not of the isometric system, are either uniaxial or biaxial. Optic axis, Visual axis (Opt.), the straight line passing through the center of the pupil, and perpendicular to the surface of the eye. Radical axis of two circles (Geom.), the straight line perpendicular to the line joining their centers and such that the tangents from any point of it to the two circles shall be equal to each other. Spiral axis (Arch.), the axis of a twisted column drawn spirally in order to trace the circumvolutions without. Axis of abscissas and Axis of ordinates. See Abscissa.
Center of oscillation
Oscillation Os`cil*la"tion, n. [L. oscillatio a swinging.] 1. The act of oscillating; a swinging or moving backward and forward, like a pendulum; vibration. 2. Fluctuation; variation; change back and forth. His mind oscillated, undoubtedly; but the extreme points of the oscillation were not very remote. --Macaulay. Axis of oscillation, Center of oscillation. See under Axis, and Center.
Center of oscillation
Center Cen"ter, n. [F. centre, fr. L. centrum, fr. round which a circle is described, fr. ? to prick, goad.] 1. A point equally distant from the extremities of a line, figure, or body, or from all parts of the circumference of a circle; the middle point or place. 2. The middle or central portion of anything. 3. A principal or important point of concentration; the nucleus around which things are gathered or to which they tend; an object of attention, action, or force; as, a center of attaction. 4. The earth. [Obs.] --Shak. 5. Those members of a legislative assembly (as in France) who support the existing government. They sit in the middle of the legislative chamber, opposite the presiding officer, between the conservatives or monarchists, who sit on the right of the speaker, and the radicals or advanced republicans who occupy the seats on his left, See Right, and Left. 6. (Arch.) A temporary structure upon which the materials of a vault or arch are supported in position until the work becomes self-supporting. 7. (Mech.) (a) One of the two conical steel pins, in a lathe, etc., upon which the work is held, and about which it revolves. (b) A conical recess, or indentation, in the end of a shaft or other work, to receive the point of a center, on which the work can turn, as in a lathe. Note: In a lathe the live center is in the spindle of the head stock; the dead center is on the tail stock. Planer centers are stocks carrying centers, when the object to be planed must be turned on its axis. Center of an army, the body or troops occupying the place in the line between the wings. Center of a curve or surface (Geom.) (a) A point such that every line drawn through the point and terminated by the curve or surface is bisected at the point. (b) The fixed point of reference in polar co["o]rdinates. See Co["o]rdinates. Center of curvature of a curve (Geom.), the center of that circle which has at any given point of the curve closer contact with the curve than has any other circle whatever. See Circle. Center of a fleet, the division or column between the van and rear, or between the weather division and the lee. Center of gravity (Mech.), that point of a body about which all its parts can be balanced, or which being supported, the whole body will remain at rest, though acted upon by gravity. Center of gyration (Mech.), that point in a rotating body at which the whole mass might be concentrated (theoretically) without altering the resistance of the intertia of the body to angular acceleration or retardation. Center of inertia (Mech.), the center of gravity of a body or system of bodies. Center of motion, the point which remains at rest, while all the other parts of a body move round it. Center of oscillation, the point at which, if the whole matter of a suspended body were collected, the time of oscillation would be the same as it is in the actual form and state of the body. Center of percussion, that point in a body moving about a fixed axis at which it may strike an obstacle without communicating a shock to the axis. Center of pressure (Hydros.), that point in a surface pressed by a fluid, at which, if a force equal to the whole pressure and in the same line be applied in a contrary direction, it will balance or counteract the whole pressure of the fluid.
Oscillancy
Oscillancy Os"cil*lan*cy, n. The state of oscillating; a seesaw kind of motion. [R.]
Oscillaria
Oscillaria Os`cil*la"ri*a, n. [NL., fr. L. oscillare to swing.] (Bot.) A genus of dark green, or purplish black, filamentous, fresh-water alg[ae], the threads of which have an automatic swaying or crawling motion. Called also Oscillatoria.
Oscillate
Oscillate Os"cil*late, v. i. [imp. & p. p. Oscillated; p. pr. & vb. n. Oscillating.] [L. oscillare to swing, fr. oscillum a swing, a little mask or puppet made to be hung from trees and swing in the wind, prob. orig., a little mouth, a dim. from os mouth. See Oral, and cf. Osculate.] 1. To move backward and forward; to vibrate like a pendulum; to swing; to sway. 2. To vary or fluctuate between fixed limits; to act or move in a fickle or fluctuating manner; to change repeatedly, back and forth. The amount of superior families oscillates rather than changes, that is, it fluctuates within fixed limits. --Dc Quincey.
Oscillated
Oscillate Os"cil*late, v. i. [imp. & p. p. Oscillated; p. pr. & vb. n. Oscillating.] [L. oscillare to swing, fr. oscillum a swing, a little mask or puppet made to be hung from trees and swing in the wind, prob. orig., a little mouth, a dim. from os mouth. See Oral, and cf. Osculate.] 1. To move backward and forward; to vibrate like a pendulum; to swing; to sway. 2. To vary or fluctuate between fixed limits; to act or move in a fickle or fluctuating manner; to change repeatedly, back and forth. The amount of superior families oscillates rather than changes, that is, it fluctuates within fixed limits. --Dc Quincey.
Oscillating
Oscillate Os"cil*late, v. i. [imp. & p. p. Oscillated; p. pr. & vb. n. Oscillating.] [L. oscillare to swing, fr. oscillum a swing, a little mask or puppet made to be hung from trees and swing in the wind, prob. orig., a little mouth, a dim. from os mouth. See Oral, and cf. Osculate.] 1. To move backward and forward; to vibrate like a pendulum; to swing; to sway. 2. To vary or fluctuate between fixed limits; to act or move in a fickle or fluctuating manner; to change repeatedly, back and forth. The amount of superior families oscillates rather than changes, that is, it fluctuates within fixed limits. --Dc Quincey.
Oscillating
Oscillating Os"cil*la`ting, a. That oscillates; vibrating; swinging. Oscillating engine, a steam engine whose cylinder oscillates on trunnions instead of being permanently fixed in a perpendicular or other direction. --Weale.
Oscillating current
Oscillating current Os"cil*lat`ing current (Elec.) A current alternating in direction.
Oscillating engine
Oscillating Os"cil*la`ting, a. That oscillates; vibrating; swinging. Oscillating engine, a steam engine whose cylinder oscillates on trunnions instead of being permanently fixed in a perpendicular or other direction. --Weale.
Oscillation
Oscillation Os`cil*la"tion, n. [L. oscillatio a swinging.] 1. The act of oscillating; a swinging or moving backward and forward, like a pendulum; vibration. 2. Fluctuation; variation; change back and forth. His mind oscillated, undoubtedly; but the extreme points of the oscillation were not very remote. --Macaulay. Axis of oscillation, Center of oscillation. See under Axis, and Center.
Oscillative
Oscillative Os"cil*la*tive, a. Tending to oscillate; vibratory. [R.] --I. Taylor.
Oscillator
Oscillator Os"cil*la`tor, n. One that oscillates; specif.: (a) (Elec.) Any device for producing electric oscillations; esp., an apparatus for generating electric waves in a system of wireless telegraphy. (b) (Mech.) An instrument for measuring rigidity by the torsional oscillations of a weighted wire.
Oscillatoria
Oscillaria Os`cil*la"ri*a, n. [NL., fr. L. oscillare to swing.] (Bot.) A genus of dark green, or purplish black, filamentous, fresh-water alg[ae], the threads of which have an automatic swaying or crawling motion. Called also Oscillatoria.
Oscillatoria
Oscillatoria Os`cil*la*to"ri*a, n. pl. [NL. See Oscillatory.] (Bot.) Same as Oscillaria.
Oscillatory
Oscillatory Os"cil*la*to*ry, a. [Cf. F. oscillatoire. See Oscillate.] Moving, or characterized by motion, backward and forward like a pendulum; swinging; oscillating; vibratory; as, oscillatory motion.

Meaning of Oscilla from wikipedia

- For the genus of marine molluscs, see Oscilla (gastropod). Oscilla is a word applied in Latin usage to small figures, most commonly masks or faces, which...
- Monoptygma (Oscilla) cingulata) Oscilla circinata A. Adams, 1867 Oscilla composita Peñas & Rolán, 2017 Oscilla cylindrica de Folin, 1879) Oscilla duplex Laseron...
- Oscilla tricordata is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae (the pyrams), which lives near ****an and Korea....
- Oscilla ficara is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. Rosenberg, G. (2012)....
- Oscilla punicea is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. "Oscilla punicea". WoRMS...
- Oscilla ligata is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. The rather thin s****...
- ritual of the earlier Catholic Church. It has also been surmised that oscilla hung on hooks along colonnaded porticoes may have comparable evil-warding...
- Oscilla annulata is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. The length of the whitish...
- Oscilla aquilonia is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. The length of the s****...
- Oscilla galilae is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. This species occurs in...