DEU- 



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BIA- 



deuterocone (du'tgrokon') n. [Gk. 

 deuteros, second ; konos, cusp.] 

 A mammalian premolar cusp 

 corresponding to the molar pro- 

 tocone (anat). 



deuteroproteose (du'tgropro'tSos) n. 

 [Gk. deuteros, second ; protein, to 

 be first.] A secondary product 

 from the gastric and pancreatic 

 digestion of proteids (phys). 



deuterostoma (du'tgrosto'ma) n. [Gk. 

 deuteros, second ; stoma, mouth.] 

 A mouth formed secondarily, as 

 distinct from the gastrula mouth 

 (zool). 



deuterotoky (du'teVot'ok!) n. [Gk. 

 deuteros, second ; tokos, birth.] 

 Reproduction of both sexes from 

 parthenogenetic eggs ; cf. arrheno- 

 toky and thelyotoky (zool). 



deuterozooid (du'tSrozo'oid) n. [Gk. 

 deuteros, second ; zoon, animal ; 

 eidos, resemblance.] A zooid 

 produced by budding from a 

 primary zooid (zool). 



deuthyalosome (duthi'alosom) n. [Gk. 

 deuteros, second ; hyalos, glass ; 

 soma, body.] The nucleus remain- 

 ing in the ovum after the formation 

 of the first polar body (cyt.). 



deutoblast (du'toblast) n. [Gk. 

 deuteros, second ; blastos, bud.] 

 The amoeba-like bodies formed 

 from the protoblasts in the zygote 

 of Microclossia, and liberated to 

 multiply in the blood (zool.}. 



deutocerebron (du'toseVSbron) n. 

 [Gk. deuteros, second ; kerebron, 

 brain.] That portion of the brain 

 of certain insects which corre- 

 sponds with the deuterocerebrum 

 of Crustaceans (zool.} ; also deuto- 

 cerebrum. 



deutomalae (du'toma'le, -mal'a) n. plu. 

 [Gk. deuteros, second ; malon, 

 cheek.] The broad plate in the 

 Chaetognatha covering the under 

 part of the head and partially 

 enclosing the mouth, formed by 

 the fusion of the second pair of 

 mouth appendages (zool.). 



deutomerite (dutom'e'rit) n. [Gk. 

 deuteros, second ; meros, part.] 

 The posterior division of a Greg- 

 arine body (zool.). 



deutoplasm (dii'toplazm) n. [Gk. 

 deuteros, second ; plasma, some- 



thing moulded.] The yolk or 

 food material in the cytoplasm of 

 an ovum ; opp. protoplasm (cyt.). 



deutoscolex (du'tosko'lgks) n. [Gk. 

 deuteros, second ; skolex, head.] 

 A secondary scolex produced by 

 budding, in the bladder-worm stage 

 of certain tape-worms (zool.). 



deutovum(duto'vum) n. \Gk.deuteros, 

 second ; L. ovum, egg.] A stage 

 in the metamorphosis of certain 

 mites in which the outer envelope 

 becomes brown and hard, and 

 splits longitudinally, exposing the 

 thin inner membrane (zool). 



development (deveTo'pme'nt) n. [F. 

 developper, to unfold.] The changes 

 undergone by an organism on reach- 

 ing maturity (biol). 



dexiotropic (dgk'slotrop'ik) a. [Gk. 

 dexios, right ; trepein, to turn.] 

 Having the whorls turning from 

 left to right ; appl. shells (zool.) ; 

 appl. spiral cleavage (cyt.). 



dextral (deYstral) a. [L. dexter, 

 right-hand.] See dexiotropic. 



dextrin (dek'strin) n. [L. dexter, 

 right-hand.] A soluble substance 

 derived from starch by exposure 

 to a high temperature for a short 

 time (phys). 



dextrorse (dekstrors', dSk'strors) a. 



g.. dexter, right ; vertere, to turn.] 

 rowing in a spiral which twines 

 from left to right (hot). 



diachaenium (di'ake'nlum) n. [Gk. 

 dis, twice ; a, not ; chanein, to 

 gape.] Each part of a cremocarp 

 (dot). 



diacranteric (dl'akranteVik) a. [Gk. 

 dia, asunder ; kranteres, wisdom 

 teeth.] With a diastema between 

 the front and back teeth, as in 

 snakes (zool). 



diactinal (dlak'tinal) a. [Gk. dis, 

 twice ; aktis, ray.] With two rays 

 pointed at the ends (zool). 



diadelphous (dl'SdeTfus) a. [Gk. dis, 

 twice ; adelphos, brother.] Having 

 the stamens in two bundles owing 

 to the fusion of the filaments 

 (hot). 



dladematoid (dl'adgm'atoid) a. [Gk. 

 diadema, crown ; eidos, shape.] Of 

 Echinoids, having the pore plates 

 arranged as follows : three prim- 

 aries with occasionally a secondary 



