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Hyper- :: Hyper- () A prefix equivalent to super- or per-; as hyperoxide, or peroxide. [Obs.] See Per-..

Equi- :: Equi- () A prefix, meaning equally; as, equidistant; equiangular..

Bi- :: Bi- () In the composition of chemical names bi- denotes two atoms, parts, or equivalents of that constituent to the name of which it is prefixed, to one of the other component, or that such constituent is present in double the ordinary proportion; as, bichromate, bisulphide. Be- and di- are often used interchangeably..

Laevo- :: Laevo- () A prefix. See Levo.

Trans- :: Trans- () A prefix, signifying over, beyond, through and through, on the other side, as in transalpine, beyond the Alps; transform, to form through and through, that is, anew, transfigure..

E- :: E- () A Latin prefix meaning out, out of, from; also, without. See Ex-..

Ultra- :: Ultra- (a.) A prefix from the Latin ultra beyond (see Ulterior), having in composition the signification beyond, on the other side, chiefly when joined with words expressing relations of place; as, ultramarine, ultramontane, ultramundane, ultratropical, etc. In other relations it has the sense of excessively, exceedingly, beyond what is common, natural, right, or proper; as, ultraconservative; ultrademocratic, ultradespotic, ultraliberal, ultraradical, etc..

Magneto- :: Magneto- () A prefix meaning pertaining to, produced by, or in some way connected with, magnetism..

Ad- :: Ad- () As a prefix ad- assumes the forms ac-, af-, ag-, al-, an-, ap-, ar-, as-, at-, assimilating the d with the first letter of the word to which ad- is prefixed. It remains unchanged before vowels, and before d, h, j, m, v. Examples: adduce, adhere, adjacent, admit, advent, accord, affect, aggregate, allude, annex, appear, etc. It becomes ac- before qu, as in acquiesce..

Retro- :: Retro- () A prefix or combining form signifying backward, back; as, retroact, to act backward; retrospect, a looking back..

I :: I- (prefix.) See Y-.

Sub- :: Sub- () A prefix signifying under, below, beneath, and hence often, in an inferior position or degree, in an imperfect or partial state, as in subscribe, substruct, subserve, subject, subordinate, subacid, subastringent, subgranular, suborn. Sub- in Latin compounds often becomes sum- before m, sur before r, and regularly becomes suc-, suf-, sug-, and sup- before c, f, g, and p respectively. Before c, p, and t it sometimes takes form sus- (by the dropping of b from a collateral form, subs-)..

Deut- :: Deut- () A prefix which formerly properly indicated the second in a regular series of compound in the series, and not to its composition, but which is now generally employed in the same sense as bi-or di-, although little used..

Haemato- :: Haemato- (prefix.) See Haema-.

Countre- :: Countre- () Same as prefix Counter-.

Contra :: Contra () A Latin adverb and preposition, signifying against, contrary, in opposition, etc., entering as a prefix into the composition of many English words. Cf. Counter, adv. & pref..

Octa- :: Octa- () A prefix meaning eight. See Octo-.

Uni- :: Uni- () A prefix signifying one, once; as in uniaxial, unicellular..

Infra :: Infra (adv.) Below; beneath; under; after; -- often used as a prefix.

Poly :: Poly (n.) A whitish woolly plant (Teucrium Polium) of the order Labiatae, found throughout the Mediterranean region. The name, with sundry prefixes, is sometimes given to other related species of the same genus..

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