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i⋅so⋅met⋅ric

[ahy-suh-me-trik]

–adjective Also, i⋅so⋅met⋅ri⋅cal.

1.	of, pertaining to, or having equality of measure.

2.	of or pertaining to isometric exercise.

3.	Crystallography. noting or pertaining to that system of crystallization that is characterized by three equal axes at right angles to one another. Compare crystal system.

4.	Prosody. of equal measure; made up of regular feet.

Drafting. designating a method of projection (isometric projection) in which a three-dimensional object is represented by a drawing (isometric drawing) having the horizontal edges of the object drawn usually at a 30° angle and all verticals projected perpendicularly from a horizontal base, all lines being drawn to scale. Compare orthographic projection.

–noun

6.	isometrics, isometric exercise (def. 1).

7.	an isometric drawing.

8.	Also called isometric line. Physics. isochor.

Origin:
1830–40; < Gk isometr(ía) isometry + -ic

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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i·so·met·ric (ī'sə-mět'rĭk) Pronunciation Key
adj.

Of or exhibiting equality in dimensions or measurements.
Of or being a crystal system of three equal axes lying at right angles to each other.
Physiology Of or involving muscular contraction against resistance in which the length of the muscle remains the same.

n. A line connecting isometric points.

[From Greek īsometros, of equal measure : īso-, iso- + metron, measure; see mē-² in Indo-European roots.]

i'so·met'ri·cal·ly adv.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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isometric

1840, coined from Gk. isos "equal" + metron "measure" (see meter (2)). Originally a method of using perspective in drawing; the physiological sense relating to muscular action is from 1891, borrowed from Ger. isometrisch (1882). Isomer is an 1866 back-formation; isometrics coined 1962 in Amer.Eng.

Online Etymology Dictionary, © 2001 Douglas Harper
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isometric
adjective
1.	related by an isometry
2.	of or involving muscular contraction in which tension increases while length remains constant [ant: isotonic]
3.	having equal dimensions or measurements
4.	of a crystal system characterized by three equal axes at right angles
noun
1.	a line connecting isometric points [syn: isometric line]

WordNet® 3.0, © 2006 by Princeton University.
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isometric (ī'sə-mět'rĭk) Pronunciation Key
Adjective

See cubic.
Of or involving muscular contraction against resistance in which the length of the muscle remains the same.
A graph showing the relationship between two quantities, such as pressure and temperature, when a third quantity, such as volume, is held constant.

Isometric

I`so*met"ric\, Isometrical \I`so*met"ric*al\, a. [Iso- + Gr. ? measure.]

1. Pertaining to, or characterized by, equality of measure.

2. (Crystallog.) Noting, or conforming to, that system of crystallization in which the three axes are of equal length and at right angles to each other; monometric; regular; cubic. Cf. Crystallization.

Isometric lines (Thermodynamics), lines representing in a diagram the relations of pressure and temperature in a gas, when the volume remains constant.

Isometrical perspective. See under Perspective.

Isometrical projection, a species of orthographic projection, in which but a single plane of projection is used. It is so named from the fact that the projections of three equal lines, parallel respectively to three rectangular axes, are equal to one another. This kind of projection is principally used in delineating buildings or machinery, in which the principal lines are parallel to three rectangular axes, and the principal planes are parallel to three rectangular planes passing through the three axes.

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