PROTERANDRY 



1194 



PROTOHEMOBLAST 



Proterandry (pro-ter-an' '-dre) [trpdrepog, being before ; 

 avi/p, male]. In biology, the maturation of the 

 stamens in a perfect flower before the pistil is suffici- 

 ently mature to admit of fertilization. 



Proteranthous (pro - ter - an'- thus) [rcporepog, fore ; 

 avOog, flower]. In biology, flowering before leafing. 



Proterogynous ( pro-ter-oj' -in-us) [nporepog, lore ; yvvi/, 

 female]. In biology, possessing stigmas that are first 

 to mature. 



Proterogyny ( pro-ter-oj' '-in-e) [rrpdrepog , fore ; yirvt], 

 female]. In biology, the maturation of the pistil of a 

 perfect flower before the stamens have matured their 

 pollen. 



Proteus (pro'-te-us) [E.]. A genus of microbes of the 

 order of schizomycetes. See under Bacteria, Syno- 

 nymatic Table of. 



Prothallium (pro-thai' -e-um) [pro, before ; thallus, 

 a young shoot]. In biology, the thalloid oophyte or 

 sexual generation of a fern or other pteridophyte, pro- 

 duced by the germination of a spore and giving rise 

 by means of antheridia and archegonia to the frondose 

 generation. Cf. Protonema. 



Prothallus (pro-thai' -us). Same as Prothallium. 



Prothelmis (pro - thel'- mis) [irpurog, first : eAiiig, a 

 worm]. In biology, a hypothetic ancestral worm, 

 having a structure homologous to the four-layered 

 germ of metazoans. 



Prothesis (proth'-es-is) [npo', for; deaig, a placement]. 

 Synonym of Prosthesis. P. ocularis, an artificial eye. 



Prothetic (pro-thet'-ik). Synonym of Prosthetic. 



Prothoracic (pro - tho - ras' '- ik) [rcp6, before; Oupa!;, 

 breast]. Pertaining to the prothorax. 



Prothoracotheca (pro-tho-rak-o-the'-kah) [np6, before; 

 Oupa^, breast; tir/ny, a case: pi. , Prothoracothecaf\. 

 In biology, that part of a pupa-case inclosing the pro- 

 thorax. 



Prothorax (pro-tho'-raks) [np6, before ; 66pa$-, breast]. 

 In biology, the most anterior of the three thoracic 

 somites of an insect. 



Prothrorubin ( pro-thro-ru f -bin) . One of the bodies 

 which influence the breaking up of cystin and favor 

 coagulation of the blood. (Schmidt.) 



Prothyalosoma (pro-thi-al-o-so'-mah) [irpurog, first; 

 i>a?j)g, glass; au/xa, body: pi. , Prothyalosomata]. 

 The name proposed by van Beneden (1883) for the 

 envelop of the nucleolus of an ovum. 



Prothyalosomal (pro-thi-al-o-so'-mal) [rcpurog, first ; 

 vaAog, glass; aufia, body]. Pertaining to the pro- 

 thyalosoma. 



Protiodid (prot-i'-o-did) [rtpurog, first; lu6?/g, like a 

 violet]. One of. a series of salts in which the 

 metal or radicle fixes, relatively, the smallest proportion 

 of iodin, e.g., Protiodid of Mercury, Hg 2 I 2 , in 

 contradistinction to the biniodid, Hg L. 



Protist (pro'-tist) [protiston ; npuriarog. the very 

 first]. Any unicellular organism. Any protophyte, 

 or protozoon ; a microorganism. 



Protista (pro-tis'-tah) [pi., superlative of irpurog, first]. 

 In biology, the name proposed by Hseckel (1868) for 

 those lower organisms which are not readily referred 

 to the plant or animal kingdom. See Oozoa. 



Protmesis (prot-me'-sis). Synonym of Umbilicus. 



Proto- (pro'-to-) [irpurog, first]. A prefix signifying 

 first. 



Protoalbumose (pro-to-al'-bu-mdz). See Albumose. 



Protoblast (pro'- to - blast) [rcpurog, first; pAaorSg, 

 germ]. I. A cell without a distinct cell-wall. 2. 

 The nucleus of the ovum. (Villot.) 



Protoblastic (pro-to-bias' -tik) [irpurog, first ; (3Xaar6g, 

 germ]. See Holoblastic. 



Protocaseose ( pro-lo-ka'-ze-oz) [irpurog, first ; caseum, 

 cheese]. The first product of the digestion of casein. 



Protocatechuic Acid (pro-to-kat-e-chu'-ik) [irpurog, 

 first; catechu], Dioxy-benzoic acid. See Acid. It 

 sometimes occurs in urine. P. aldehyd. See Aldehyd. 



Protocercal (pro-to-ser' -kal) [irpurog, first ; /, 

 tail]. In biology, having a tail-fin of primitive typ? 



Protocere (pro' -to-ser) [irpurog, first ; nepag, horn]. In 

 biology, the rudimentary antler of a deer. 



Protocerebral ( pro-to-ser' '-e-bral ) [irpurog, first ; cere- 

 brum, cerebrum]. Pertaining to the protocerebrum. 



Protocerebrum ( pro-to-ser' -e-brum) [-purog, first; 

 cerebrum, cerebrum]. The embryonic rudiment or 

 vesicle from which the cerebrum is evolved. 



Protochlorid (pro-to-klo'-rld) [irpurog, first; /t '■ 

 green]. One of a series of salts in which the metal 

 or radicle fixes, relatively, the smallest amount of 

 chlorin, e. g., the Protochlorid of Mercury, Hg„Cl 2 . 



Protococcus (pro-to-kok'-us) [irpurog, first ; kokkoc, 

 berry]. A genus of unicellular algce. 



Proto-compound (pro-to-kom'-porvnd) \jrpuToc, first ; 

 ME., compounen, to mix or compound]. A salt in 

 which the metal or radicle fixes, relatively, the smallest 

 proportion of the acid element. See Protiodid and 

 Protochlorid. 



Proto-conch ( pro' -to-kongk) \jvpuTor , first ; mj; y>/, a 

 mussel, shell]. In biology, the primitive type of shell 

 in an ammonoid cephalopod. 



Protoconchal (pro-to-kong' -kal) [rrpciroc, first ; K&Yffli 

 a mussel]. Pertaining to the protoconch. 



Protocone (pro' -to-kon) \_~puroc, first (<rpo, before, an- 

 terior) ; nibvoc, cone]. In biology, the anterior, inter- 

 nal cusp of an upper molar. 



Protoconid (pro-to-ko' -nid ) [npaToc, first (~po, before, 

 anterior) ; kuvoc, cone]. In biology, the anterior 

 internal cusp of a lower molar. 



Protoconule (pro-to-kon'-ul) [Tvpuroc, first (~po, be- 

 fore, anterior; kuvoc, cone]. In biology, the anterior 

 intermediate cusp of an upper molar. 



Protodont (pro'-to-dont) [tt purog, first ; bSovg, tooth]. 

 A simple molar tooth in which the cusps are not well 

 defined. 



Proto-elastin ( pro-to-e-las' -tin) [izpurog, first ; elastin~\. 

 A chemic substance obtained by Frenzel from 

 cuticula of gregarinae. 



Proto-elastose (pro-to-e-las' -tos) [irpurog, first ; 



eiv, to urge forward]. Hemi-elastin ; one of the pro 

 ducts of digestion of elastin. It is precipitable by 

 saturation with sodium chlorid. 



Protogala (pro-tog' -al-ah). Synonym of Colostrum. 



Protogaster (pro-to-gas' -ter) \j:puTog, first ; ; 

 stomach]. In biology, the primitive intestinal cavity 

 of a gastrula or two-layered germ. 



Protogastric (pro-to-gas' -trik) [-purog, first ; 3 

 belly]. Pertaining to the protogaster. 



Protogenal ( pro-toj'-en al) [rrpurog, first; yevijg, 

 duced]. Primitive ; original ; first-born. 



Protogenesis (pro-to-ien' -es-is) [rrpurog, first ; 3 

 generation]. See Abio^enesis. 



Protogenetic (pro-to-jen-et'-ik) \jrpurog, first ; ; 

 genesis]. Pertaining to protogenesis. 



Protogenic ( pro-to-jen' -ik) [xpurog, first; ytvi/g, pro- 

 duced]. In biology, applied to intercellular s| 

 formed at the time the tissues are beginning to ditTci - 

 entiate. 



Protoglobulose (pro - to -glob'- u - Idz) [irpurog, 

 globulus, a ball]. One of the primary products of the 1 

 digestion of globulin. 



Protogynous (pro-toj' -in-us) [-purog, first ; ; 

 male]. Pertaining to protogyny. 



Protogyny (pro-toj' -in-e) [npurog, first; ywf/, fei 

 See Proterogyny. 



Protohemoblast ( pro-to-hem' -o-blast) [npurog, 

 ai/ia, blood; ft^aarog, sprout]. The hemoglobin ceh. 



