Part 257

{ Di*a"ri*al (?), Di*a"ri*an (?), } a. [See Diary.] Pertaining to a diary; daily.

Di"a*rist (?), n. One who keeps a diary.

{ Di`ar*rhe"a, Di`ar*rhœ"a }, (d`ar*r"), n. [L. diarrhoea, Gr. dia`rroia, fr. dia`rrei^n to flow through; dia` + "rei^n to flow; akin to E. stream. See Stream.] (Med.) A morbidly frequent and profuse discharge of loose or fluid evacuations from the intestines, without tenesmus; a purging or looseness of the bowels; a flux.

{ Di`ar*rhe"al, Di`ar*rhœ"al } a. (Med.) Of or pertaining to diarrhea; like diarrhea.

{ Di`ar*rhet"ic, Di`ar*rhœt"ic } (?), a. (Med.) Producing diarrhea, or a purging.

Di`ar*thro"di*al (?), a. (Anat.) Relating to diarthrosis, or movable articulations.

||Di`ar*thro"sis (?), n. [NL., fr. Gr. &?;, fr. &?; to joint, articulate; dia` through, asunder + &?; to fasten by a joint, 'a`rqron joint.] (Anat.) A form of articulation which admits of considerable motion; a complete joint; abarticulation. See Articulation.

Di"a*ry (?), n.; pl. Diaries (#). [L. diarium, fr. dies day. See Deity.] A register of daily events or transactions; a daily record; a journal; a blank book dated for the record of daily memoranda; as, a diary of the weather; a physician's diary.

Di"a*ry, a. lasting for one day; as, a diary fever. [Obs.] "Diary ague." Bacon.

Di"a*spore (?), n. [From Gr. &?; a scattering; dia` through, asunder + &?; to sow, scatter like seed: cf. F. diaspore.] (Min.) A hydrate of alumina, often occurring in white lamellar masses with brilliant pearly luster; -- so named on account of its decrepitating when heated before the blowpipe.

Di"a*stase (?), n. [Gr. &?; separation, fr. &?;, &?; to stand apart; dia` through + &?;, &?;, to stand, set: cf. F. diastase. Cf. Diastasis.] (Physiol. Chem.) A soluble, nitrogenous ferment, capable of converting starch and dextrin into sugar.

The name is more particularly applied to that ferment formed during the germination of grain, as in the malting of barley; but it is also occasionally used to designate the amylolytic ferment contained in animal fluids, as in the saliva.

Di`a*sta"sic (?), a. Pertaining to, or consisting of, diastase; as, diastasic ferment.

||Di*as"ta*sis (?), n. [NL. See Diastase.] (Surg.) A forcible separation of bones without fracture.

Di`a*stat"ic (?), a. [Gr. &?; separative. See Diastase.] (Physiol. Chem.) Relating to diastase; having the properties of diastase; effecting the conversion of starch into sugar.

The influence of acids and alkalies on the diastatic action of saliva.

Lauder Brunton.

Di"a*stem (?), n. [L. diastema, Gr. &?;, fr. &?;: cf. F. diastème.] (a) Intervening space; interval. (b) (Anc. Mus.) An interval.

||Di`a*ste"ma (?), n. [L. See Diastem.] (Anat.) A vacant space, or gap, esp. between teeth in a jaw.

Di*as"ter (?), n. [Gr. di- = di`s- twice + &?; star.] (Biol.) A double star; -- applied to the nucleus of a cell, when, during cell division, the loops of the nuclear network separate into two groups, preparatory to the formation of two daughter nuclei. See Karyokinesis.

||Di*as"to*le (?), n. [L., fr. Gr. &?;, fr. &?; to put asunder, to separate; dia` through + &?; to set, to place.] 1. (Physiol.) The rhythmical expansion or dilatation of the heart and arteries; -- correlative to systole, or contraction.

2. (Gram.) A figure by which a syllable naturally short is made long.

Di`as*tol"ic (?), a. (Physiol.) Of or pertaining to diastole.

Di"a*style (?), n. [L. diastylus, Gr. &?;; dia` through, asunder + &?; pillar, column: cf. F. diastyle.] (Arch.) See under Intercolumniation.

||Di`a*tes"sa*ron (?), n. [L., fr. Gr. &?; (sc. &?;); dia` through + &?;, gen. of &?; four (sc. &?;.).] 1. (Anc. Mus.) The interval of a fourth.

2. (Theol.) A continuous narrative arranged from the first four books of the New Testament.

3. An electuary compounded of four medicines.

Di`a*ther"mal (?), a. [Gr. &?; thoroughly warm; dia` through + &?; warm, hot. Cf. Diathermous.] Freely permeable by radiant heat.