DEV 



121 



DIA 



has a scurfy matter on its leaves, 

 which are used for polishing in 

 Japan. 



development, n., d$-v$l'8p'm&nt 

 (F. developper, to unfold), the 

 progressive changes taking place 

 in living bodies until maturity 

 is reached ; increase ; growth : 

 theory of development, the pro- 

 gressive advancement of life from 

 its lowest types as they first 

 appeared on the earth, or are 

 supposed to have first existed, up 

 to those highest forms of life now 

 existing on the earth, as contra- 

 distinguished from acts of direct 

 creation ; evolution. 



devitalise, v., de-vlt'-til-iz (L. de, 

 down ; Eng. vitalise), to deprive 

 of vitality or life, as the part of 

 an animal body. 



dewlap, n., dvf-lap (Dan. dog-lcep, 

 dew-sweeping ; Prov. Sw. dogg, 

 Dut. douw, dew ; Dan. Icep, a 

 flap), the loose skin which hangs 

 down from the neck of an ox. 



dextral, a., deks'tral (L. dextra, 

 the right hand), right hand, or 

 to the right hand ; denoting the 

 direction of the spiral in the 

 greater number of univalve 

 shells. 



dextrine, n., debs' trin (L. dexter, 

 right, on the right hand), a 

 gummy matter into which the 

 interior substance of starch 

 globules is convertible by dias- 

 tase, and by certain acids, so 

 called from turning the plane in 

 polarized light to the right hand. 



dextrorse, &.,deks-trors' (L. dexter, 

 to the right ; versus, turned), 

 directed towards the right. 



diabetes, n., di'd-bet'ez (Gr. dia- 

 betes, a siphon fromdia, through; 

 baino, I go), a disease charac- 

 terised by passing an immoderate 

 quantity of urine, with great 

 thirst and general debility : 

 diabetes insipidus, m-sip'-ld-us 

 (L. insipidus, unsavoury from 

 in, not ; sdpw, I taste), diabetes 

 in which the urine is limpid and 



devoid of sugar : d. mellitus, 

 mel-llt'-us (L. mellitus, tasting 

 like honey from mel, honey), 

 diabetes in which the urine is 

 sweet, and contains sugar. 



diacetate, n., di-as'-et-at (Gr. dis, 

 twice; Eng. acetate), an 'acetate 7 

 is a combination of acetic acid 

 with asalifiablebase; a 'diacetate' 

 is an ' acid acetate, ' or a combina- 

 tion of two parts of acetic acid 

 with a salifiable base : diacetate 

 of lead, sugar of lead ; commonly 

 called ' acetate of lead. ' 



diachaenium, n., di'd-ken'i-um 

 (Gr. dis, twice; Eng. achcenium), 

 fruit composed of two achsenia 

 united by a commissure to a com- 

 mon axis ; same as ' cremocarp. ' 



diachylon, n., dl-ak'-il-ftn (Gr. dm, 

 through, by means of ; chulos, 

 juice), an adhesive plaster, formerly 

 made from expressed juices, now 

 made of an oxide of lead and oil ; 

 litharge plaster. 



diachyma, n., dl-dJc^m-d (Gr. dia, 

 through ; chumos, a fluid, juice), 

 the cellular tissue of leaves oc- 

 cupying the space between their 

 two surfaces. 



diadelphous, a., dl'-a-delf-us (Gr. 

 dis, twice ; adelphos, a brother), 

 having stamens in two bundles 

 united by their filaments. 



diagnosis, n., di'dg-noz'is (Gr. 

 diagnosis, a judging power or 

 faculty from dia, through ; gig- 

 nosko, I know), the art of distin- 

 guishing one disease from another. 



dialycarpous, a., til'-al-i-Mrp'-us 

 (Gr. dialuo, I part asunder ; kar- 

 pos, fruit), in bot., having a pistil 

 or fruit composed of distinct 

 carpels: dialypetalous, a., di'dl-fr 

 pet-dl'US (Gr. petalon, a leaf), 

 having corollas composed of sev- 

 eral petals : dialysepalous, a., 

 di'al-i'Sep'al'US (Eng. sepal), 

 having a calyx composed of separ- 

 ate sepals ; also diaphyllous, a. , 

 dl-df f -il'lus (Gr. phullon, a leaf), 

 in same sense. 



dialysis, n., di-dl'is-ts (Gr. dialusis. 



