Deviation 



Diaphragm 



Devia'tion, probable, Galton's term 

 for probable variation. 



Dew-leaves, leaves which slope up- 

 wards, so that dew is collected. 



dex'trad, an unusual modification of 

 DEXTRAL = DEXTRORSE (dextra, the 

 right hand) ; Dextrin, a substance 

 produced during the transformation 

 of starch into sugar, said to be of 

 two forms : ACHROODEXTRIN and 

 AMYLODEXTRIN ; Dex'trinase, an 

 enzyme stated to be present in 

 diastase (Wysman); dex'trorse, dex- 

 tror'sus (from versus, turned to- 

 wards), towards the right hand ; 

 dex'tror'sum volu'bilis (Lat.), twin- 

 ing towards the right; Dex'trose, 

 glucose, or fruit sugar, it turns the 

 plane of polarization to the right ; 

 cf. LEVTTLOSK ; dex'tro-ro'tatory, 

 turning towards the right. 



di-, dis-, in Greek compounds = two, 

 or double. 



Diache'nium (Si, two, + Achenium), or 

 Diake'nium = CREMOCARP. 



Diach'yma (fo^ through ; x u V^> a liba- 

 tion), Link's term for MESOPHYLL. 



Diadel'phia (5t,two; d5e\06s,a brother), 

 a Linnean class having the stamens 

 in two bundles or brotherhoods ; 

 diadelph'ian, diadelph'ous, -us, -icus, 

 with two groups of stamens. 



diad'romous (Sia, through ; Spopos, 

 course), applied to a fan-shaped 

 venation, as in Gingko biloba, Linn, 

 diageotrop'ic (777, the earth ; rpoTroy, 

 a turn), a modified form of geotrop- 

 ism, the organs placing themselves 

 in a horizontal position, as though 

 opposing forces were neutralised ; 

 Diageot'ropism, the state just de- 

 scribed; Diagnosis (yvwis, wisdom), 

 a brief distinguishing character ; 

 diag'onal (ywvta, angle), a mean 

 between two forces, a compromise 

 of position ; ~ Plane, in a flower, 

 any vertical plane which is not 

 antero-posterior (front to back) or 

 lateral (side to side) ; ~ Position, 

 one intermediate between median 

 and lateral ; <~ Sym'metry, applied 

 to the valves of Diatoms when the 

 torsion amounts to 180 ; Di'agram 



an outline), see FLORAL 

 DIAGRAM; Diaheliot'ropism (?}Xios, 

 the sun ; T/SOTTOS, a turn), growth 

 more or less horizontal, under the 

 influence of light, as when leaves 

 place themselves at right angles 

 to incident light ; adj., diaheliot- 

 rop'ic. 



dialycarp'ic (StctXvw, I disband ; Kapwbs, 

 fruit), having a fruit composed of 

 distinct carpels; Dialydes'myt decrees, 

 a band), the breaking up of a stele, 

 into separate bundles, each with 

 its own endodermis ; Dialypet'alae 

 (jreraXov, a flower-leaf), Endlicher's 

 equivalent for the POLYPETALAE of 

 Jussieu ; dialypet'alous, poly- 

 petalous ; dialyphyll'ous (<j>v\\oi>, a 

 leaf), bearing separate leaves ; dia- 

 lysep'alous ( + SEPALUM), bearing 

 separate sepals ; Dialysis, the 

 separation of parts normally in 

 one, especially parts of the same 

 whorl ; Dialyste'ly (0717X97, a post), 

 a variation of POLYSTELY, in which 

 the separate steles remain for the 

 most part separate during their 

 longitudinal course. 



diamesog'amous (Sici, through, /te<roy, 

 middle, ydftos, marriage), fertiliza- 

 tion by the means of some external 

 agent, as wind or insects ; Dia- 

 mesog'amy, the condition just de- 

 fined. 



Dian'dria (5is, two, &VTJP, fodpbs, a 

 man), a Linnean class with plants 

 of two stamens ; dian'drian, dian'- 

 drous, -rus, (diander), possessing 

 two stamens. 



diaph'anous, -us (Sid, through, <pabu, 

 I show), permitting the light to 

 shine through ; also written dio- 

 ph'anus J ; Diaph'ery (0epw, I bear), 

 the calycine synthesis of two 

 flowers (Morren) ; Di'aphragm 

 ((ppdffffu, I enclose), a dividing mem- 

 brane or partition, as (1) the con- 

 striction in the neck of the nucule 

 in Chara, from the inward projec- 

 tions of the segments ; (2) the 

 transverse septa in the stem of 

 Equisetum or of grasses ; (3) the 

 layer separating the prothallium 



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