CHR- 



50 



CHR- 



science which deals with the dis- 

 tribution of organs (biol.). 



chromaffln (kromafin) a. [Gk. 

 chroma, colour ; L. affinis, re- 

 lated.] AppL cells forming the 

 medullary parts of the suprarenal 

 bodies, on account of their yellow 

 colour after treatment with chromic 

 salts ; chromophil (phys.). 



chromatic (kromat'lk). [Gk. chroma, 

 colour.] Colourable by means of 

 staining reagents (biol.). 



chromatic sphere, the sphere formed 

 by coalescence of chromosomes after 

 the anaphase in mitosis (bot.). 



chromatin (kro'matln) n. [Gk. chroma, 

 colour.] A substance in the nucleus 

 which contains nucleic acid proteids 

 and stains with basic dyes (biol?). 



chromatogen organ, a brownish 

 lobed body, the axial organ of 

 certain Echinoderms (zool.). 



chromatoid grains, readily stainable 

 grains in cell-protoplasm, probably 

 of an albuminous nature (cyt.). 



chromatolysis (kro'matol'Ms) n. [Gk. 

 chroma, colour ; lyein, to break up.] 

 Disintegration and final disappear- 

 ance of the chromatin in injured 

 nerve-cells (phys.). 



chromatophore (kro'matofor) n. [Gk. 

 chroma, colour ; pherein, to bear.] 

 The general term appl. coloured 

 plastids of plants and animals 

 (cyt.) ; a pigment cell, which under 

 control of the sympathetic nervous 

 system can be altered in shape to 

 produce a colour change (zoo!.). 



chromatoplasm (kro'matd'plazm) n. 

 [Gk. chroma, colour ; plasma, some- 

 thing moulded.] The colour or 

 pigment matter in cells (cyt.}. 



chromatospherite (kro'matdsfer'lt) n. 

 [Gk. chroma, colour ; sphaira, a 

 globe.] A nucleolus, which see (cyt.). 



chromidia (kro'mld'ia) n. plu. [Gk. 

 chroma^ colour.] Extra - nuclear 

 particles of chromatin (cyt.). 



chromidiosomes (kromid'fosomz') n. 

 plu. [Gk. chroma, colour ; soma, 

 body.] The smallest chromatin 

 particles of which the chromidial 

 mass is made up (cyt.). 



chromoblast (kro'moblast) n. [Gk. 

 chroma, colour ; blastos, a bud.] 

 An embryonic cell giving rise to a 

 pigment cell (biol.}. 



chromogen (kro'mojfin) n. [Gk. 

 chroma, colour; genos, birth.] The 

 material in plants which will de- 

 velop into colouring matter (bot.). 



chromogenic (kro'mojgn'ik) a. [Gk. 

 chroma, colour ; genos, birth.] 

 Colour - producing ; appl. organ- 

 isms, as bacteria (bot.). 



chromomere (kro'momer) n. [Gk. 

 chroma, colour ; meros, part.] One 

 of the chromatin granules of which 

 a chromosome is formed, and which 

 corresponds to an id (cyt.). 



chromophanes (kro'mofanz) n. plu. 

 [Gk. chroma, colour ; phainein, to 

 show.] Red, yellow, and green oil 

 globules found in the retina of 

 birds, reptiles, fishes, and mar- 

 supials (zool.). 



chromophil (kro'mofil) a. [Gk. 

 chroma, colour ; philein, to love.] 

 Chromaffin, which see. 



chromophilous (kromof iltis) a. [Gk. 

 chroma, colour ; philos, loving.] 

 Staining readily (biol.). 



chromophore (kro'mofor) n. [Gk. 

 chroma, colour ; pherein, to bear.] 

 Any substance to whose presence 

 colour in a compound is due 

 (Phys.). 



chromoplast (kro'moplast) n. [Gk. 

 chroma, colour ; plastos, moulded], 

 also chromoplastid. A coloured 

 plastid or pigment body other than 

 a chloroplast (biol.). 



chromoproteid (kro'mopro'teid) n. 

 [Gk. chroma, colour ; protos, first.] 

 Substance formed by combination 

 of a proteid and a pigment (phys.). 



chromosome (kro'mosom) n. [Gk. 

 chroma, colour ; soma, body.] One 

 of the deeply staining bodies, the 

 number of which is definite for the 

 cells of a species, into which the 

 chromatin resolves itself during 

 karyokinesis (cyt.). 



chrysalis (kris'alis) n. [Gk. chrysos, 

 gold.] The pupa stage of certain 

 insects (zool.). 



chrysocarpous (kris'okar'pus) a. [Gk. 

 chrysos, gold ; karpos, fruit.] With 

 golden fruit (bot.). 



chrysophyll (krls'of il) n. [Gk. chrysos, 

 gold ; phyllon, a leaf.] A yellow 

 colouring matter in plants, a de- 

 composition product of chlorophyll 

 (bot.). 



