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# equation (n.)

late 14c., a term in astrology (from French équation, 14c.); general sense of "action of making equal" is from 1650s, from Latin aequationem (nominative aequatio) "an equal distribution, a sharing in common," noun of state from past participle stem of aequare (see equal (adj.)). Mathematical sense is from 1560s, on notion of equalizing the expressions; Chemistry sense is from 1807.

updated on September 03, 2014

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### Dictionary entries near *equation*

equalizer

equally

equanimity

equanimous

equate

equation

equator

equatorial

equerry

equestrian

equi-