Dia- - Definitions from Dictionary.com

4 results for: Dia-

Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

dia-

a prefix occurring in loanwords from Greek (diabetes; dialect) and used, in the formation of compound words, to mean “passing through” (diathermy), “thoroughly,” “completely” (diagnosis), “going apart” (dialysis), and “opposed in moment” (diamagnetism).

Also, especially before a vowel, di-.

[Origin: < Gk, comb. form repr. diá (prep.) through, between, across, by, of, akin to dýo two and di- di-¹

]

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

Encyclopædia Britannica, Inc.
Dia-

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American Heritage Dictionary - Cite This Source - Share This

dia- or di-
pref.

Through: diachronic.
Across: diatropism.

[Greek, from dia, through.]

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

The American Heritage Science Dictionary - Cite This Source - Share This

dia-
A prefix meaning "through" or "across," as in diameter, the length of a line going through a circle.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Dia-

Di-\ [Gr. di`s- twice; akin to ? two, L. bis twice. See Two, and cf. Bi-, Dia-. The L. pref. dis- sometimes assumes the form di-. See Dis-.] A prefix, signifying twofold, double, twice; (Chem.) denoting two atoms, radicals, groups, or equivalents, as the case may be. See Bi-, 2.

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