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AEolotropy
AEolotropy [AE]`o*lot"ro*py, n. (Physics)
Difference of quality or property in different directions.
Allotropy
Allotropism Al*lot"ro*pism, Allotropy Al*lot"ro*py, n. [Gr.
? other + direction, way, ? to turn: cf. F. allotropie.]
(Chem.)
The property of existing in two or more conditions which are
distinct in their physical or chemical relations.
Note: Thus, carbon occurs crystallized in octahedrons and
other related forms, in a state of extreme hardness, in
the diamond; it occurs in hexagonal forms, and of
little hardness, in black lead; and again occurs in a
third form, with entire softness, in lampblack and
charcoal. In some cases, one of these is peculiarly an
active state, and the other a passive one. Thus, ozone
is an active state of oxygen, and is distinct from
ordinary oxygen, which is the element in its passive
state.
EmmetropyEmmetropy Em*met"ro*py, n. (Med.)
Same as Emmetropia. Entropy
Entropy En"tro*py, n. [Gr. ? a turning in; ? in + ? a turn,
fr. ? to turn.] (Thermodynamics)
A certain property of a body, expressed as a measurable
quantity, such that when there is no communication of heat
the quantity remains constant, but when heat enters or leaves
the body the quantity increases or diminishes. If a small
amount, h, of heat enters the body when its temperature is t
in the thermodynamic scale the entropy of the body is
increased by h ? t. The entropy is regarded as measured from
some standard temperature and pressure. Sometimes called the
thermodynamic function.
The entropy of the universe tends towards a maximum.
--Clausius.
Hemitropy
Hemitropy He*mit"ro*py, n. (Crystallog.)
Twin composition in crystals.
HypermetropyHypermetropia Hy`per*me*tro"pi*a, Hypermetropy
Hy`per*met"ro*py, n. [NL. hypermetropia, fr. Gr. ? excessive +
?, ?, the eye. See Hypermeter.]
A condition of the eye in which, through shortness of the
eyeball or fault of the refractive media, the rays of light
come to a focus behind the retina; farsightedness; -- called
also hyperopia. Cf. Emmetropia.
Note: In hypermetropia, vision for distant objects, although
not better absolutely, is better than that for near
objects, and hence, the individual is said to be
farsighted. It is corrected by the use of convex
glasses. -- Hy`per*me*trop"ic, a. Isotropy
Isotropy I*sot"ro*py, n. (Physics)
Uniformity of physical properties in all directions in a
body; absence of all kinds of polarity; specifically, equal
elasticity in all directions.
Meaning of Tropy from wikipedia
