Adjective

(en adjective)

Of, or exhibiting equality in dimensions.

Of, or being a geometric system of three equal axes lying at right angles to each other (especially in crystallography).

(physiology) Of or involving muscular contraction against resistance in which the length of the muscle remains the same. See also:

* 2011 ,David Foster Wallace The Pale King , page 10:

One of the most effective isometric exercises for the deskbound is to sit up quite straight and tighten the large muscles of the buttocks, holding for a count of eight, then release.

Antonyms include tonic movements auxotonic and isotonic which are divided into concentric and eccentric.

(physics, of a thermodynamic process) Taking place at constant volume because of being confined by rigid boundaries.

Adjective

(er)

Untrue, not factual, factually incorrect.

*{{quote-book, year=1551, year_published=1888

, title= A New English Dictionary on Historical Principles: Founded Mainly on the Materials Collected by the Philological Society , section=Part 1, publisher=Clarendon Press, location=Oxford, editor= , volume=1, page=217 , passage=Also the rule of false position, with dyuers examples not onely vulgar, but some appertaynyng to the rule of Algeber.}}

Based on factually incorrect premises: false legislation

Spurious, artificial.

:

*

*:At her invitation he outlined for her the succeeding chapters with terse military accuracy?; and what she liked best and best understood was avoidance of that false modesty which condescends, turning technicality into pabulum.

(lb) Of a state in Boolean logic that indicates a negative result.

Uttering falsehood; dishonest or deceitful.

:

Not faithful or loyal, as to obligations, allegiance, vows, etc.; untrue; treacherous.

:

*(John Milton) (1608-1674)

*:I to myself was false , ere thou to me.

Not well founded; not firm or trustworthy; erroneous.

:

*(Edmund Spenser) (c.1552–1599)

*:whose false foundation waves have swept away

Not essential or permanent, as parts of a structure which are temporary or supplemental.

(lb) Out of tune.