Diastyle, dī′a-stīl, adj. (archit.) marked by wide intercolumniation. [Gr.]

Diatessaron, dī-a-tes′a-rōn, n. a harmony of the four gospels, esp. the earliest, that of Tatian (prob. 110-180 A.D.): (mus.) the interval of a fourth: an electuary of four ingredients. [Gr., for dia tessarōn, through, or composed of four.]

Diathermal, dī-a-thėr′mal, adj. letting heat through, permeable by radiating heat—also Diather′manous, Diather′mous, Diather′mic.—ns. Diather′mance, -cy. [Gr. dia, through, thermos, heat.]

Diathesis, dī-ath′e-sis, n. a particular condition or habit of body, esp. one predisposing to certain diseases: a habit of mind.—adj. Diathet′ic. [Gr.,—dia, asunder, tithenai, to place.]

Diatom, dī′a-tom, n. one of an order of microscopic unicellular algæ, of the Diatomaceæ.—adj. Diatomā′ceous.—n. Diat′omite, diatomaceous earth. [Gr. diatomosdia, through, temnein, to cut.]

Diatomic, dī-a-tom′ik, adj. consisting of two atoms. [Gr. di-, dis, two, and atom.]

Diatomous, dī-at′ō-mus, adj. having crystals with one distinct diagonal cleavage.

Diatonic, dī-a-ton′ik, adj. proceeding by the tones and intervals of the natural scale in music.—adv. Diaton′ically. [Gr.,—dia, through, tonos, tone.]

Diatribe, dī′a-trīb, n. a continued discourse or disputation: an invective harangue.—n. Dī′atrībist, a writer or utterer of such. [Gr. diatribēdia, through, tribein, to rub, wear away.]

Dib, dib, v.i. to dip, as in angling:—pr.p. dib′bing; pa.p. dibbed. [A form of dab.]