Definition of Metra. Meaning of Metra. Synonyms of Metra

Here you will find one or more explanations in English for the word Metra. Also in the bottom left of the page several parts of wikipedia pages related to the word Metra and, of course, Metra synonyms and on the right images related to the word Metra.

Definition of Metra

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Asymmetral
Asymmetral A*sym"me*tral, a. Incommensurable; also, unsymmetrical. [Obs.] --D. H. More.
Diametral
Diametral Di*am"e*tral, n. A diameter. [Obs.] --Sir T. Browne.
Diametral pitch
Pitch Pitch, n. 1. A throw; a toss; a cast, as of something from the hand; as, a good pitch in quoits. Pitch and toss, a game played by tossing up a coin, and calling ``Heads or tails;' hence: To play pitch and toss with (anything), to be careless or trust to luck about it. ``To play pitch and toss with the property of the country.' --G. Eliot. Pitch farthing. See Chuck farthing, under 5th Chuck. 2. (Cricket) That point of the ground on which the ball pitches or lights when bowled. 3. A point or peak; the extreme point or degree of elevation or depression; hence, a limit or bound. Driven headlong from the pitch of heaven, down Into this deep. --Milton. Enterprises of great pitch and moment. --Shak. To lowest pitch of abject fortune. --Milton. He lived when learning was at its highest pitch. --Addison. The exact pitch, or limits, where temperance ends. --Sharp. 4. Height; stature. [Obs.] --Hudibras. 5. A descent; a fall; a thrusting down. 6. The point where a declivity begins; hence, the declivity itself; a descending slope; the degree or rate of descent or slope; slant; as, a steep pitch in the road; the pitch of a roof. 7. (Mus.) The relative acuteness or gravity of a tone, determined by the number of vibrations which produce it; the place of any tone upon a scale of high and low. Note: Musical tones with reference to absolute pitch, are named after the first seven letters of the alphabet; with reference to relative pitch, in a series of tones called the scale, they are called one, two, three, four, five, six, seven, eight. Eight is also one of a new scale an octave higher, as one is eight of a scale an octave lower. 8. (Mining) The limit of ground set to a miner who receives a share of the ore taken out. 9. (Mech.) (a) The distance from center to center of any two adjacent teeth of gearing, measured on the pitch line; -- called also circular pitch. (b) The length, measured along the axis, of a complete turn of the thread of a screw, or of the helical lines of the blades of a screw propeller. (c) The distance between the centers of holes, as of rivet holes in boiler plates. Concert pitch (Mus.), the standard of pitch used by orchestras, as in concerts, etc. Diametral pitch (Gearing), the distance which bears the same relation to the pitch proper, or circular pitch, that the diameter of a circle bears to its circumference; it is sometimes described by the number expressing the quotient obtained by dividing the number of teeth in a wheel by the diameter of its pitch circle in inches; as, 4 pitch, 8 pitch, etc. Pitch chain, a chain, as one made of metallic plates, adapted for working with a sprocket wheel. Pitch line, or Pitch circle (Gearing), an ideal line, in a toothed gear or rack, bearing such a relation to a corresponding line in another gear, with which the former works, that the two lines will have a common velocity as in rolling contact; it usually cuts the teeth at about the middle of their height, and, in a circular gear, is a circle concentric with the axis of the gear; the line, or circle, on which the pitch of teeth is measured. Pitch of a roof (Arch.), the inclination or slope of the sides expressed by the height in parts of the span; as, one half pitch; whole pitch; or by the height in parts of the half span, especially among engineers; or by degrees, as a pitch of 30[deg], of 45[deg], etc.; or by the rise and run, that is, the ratio of the height to the half span; as, a pitch of six rise to ten run. Equilateral pitch is where the two sloping sides with the span form an equilateral triangle. Pitch of a plane (Carp.), the slant of the cutting iron. Pitch pipe, a wind instrument used by choristers in regulating the pitch of a tune. Pitch point (Gearing), the point of contact of the pitch lines of two gears, or of a rack and pinion, which work together.
Diametrally
Diametrally Di*am"e*tral*ly, adv. Diametrically.
Symmetral
Symmetral Sym"me*tral, a. Commensurable; symmetrical. [Obs.] --Dr. H. More.

Meaning of Metra from wikipedia

- Metra (reporting mark METX) is the primary commuter rail system in the Chicago metropolitan area serving the city of Chicago and its surrounding suburbs...
- The Metra Electric District is an electrified commuter rail line owned and operated by Metra which connects Millennium Station (formerly Randolph Street...
- Look up metra in Wiktionary, the free dictionary. Metra is a commuter railroad in the Chicago area. Metra may also refer to: Mettā, a Buddhist philosophy...
- eight national long-distance routes and eight regional corridor routes. Six Metra commuter lines also terminate here. Union Station is just west of the Chicago...
- The Union Pacific North Line (UP-N) is a Metra line in the Chicago metropolitan area. It runs between Ogilvie Transportation Center and Kenosha, Wisconsin;...
- VRE cars. Leased to other operations for various events. Metra WeGo Star - acquired seven Metra gallery cars. Southern Pacific - Peninsula Commute, then...
- The BNSF Line is a Metra commuter rail line operated by the BNSF Railway in Chicago and its western suburbs, running from Chicago Union Station to Aurora...
- Lake Forest may refer to: In communities: Lake Forest, California, in Orange County Lake Forest, Placer County, California Lake Forest, Florida Lake Forest...
- Metra is the commuter rail system serving the Chicago metropolitan area in the U.S. states of Illinois and Wisconsin, servicing Cook, ****ge, Kane, Lake...
- Union Pacific and Metra. Intercity services had disappeared by the 1970s, but commuter services on the three ex-CNW mainlines, Metra's UP District lines...