HOMICULTURE 



572 



HOMOLOGOUS 



Also, the taking of human life in general by another. 

 Also, one who takes the life of another. 



Homiculture (ho' -mik-ul-chur) [homo, man ; cultura, 

 culture]. The proposed improvement of the human 

 species by attention to the laws of breeding ; stirpi- 

 culture. 



Hominisection (ho-min-is-ek' -shun) \homo, hominis, 

 man ; sectio, a cutting] . Dissection of the human 

 body ; anthropotomy. 



Homo {ho'-md) [L.]. Man. The sole genus of the 

 order Bimana. 



Homoblastic (ho-mo-blas' '-tik) \_6p.6c, the same; /3/Wrdc, 

 a bud, germ]. In biology, derived from like germs or 

 cells. 



Homocarpous (ho-mo-kar' -pus) \ofi6g, the same; 

 KapTrog, fruit]. In biology, bearing fruits all of one 

 kind. 



Homocentric (ho-mo-sen'-trik) [ofidg, same ; nkvrpov, 

 center]. Concentric. Having the same center. H. 

 Rays, a pencil of light-rays either cone-shaped or 

 rod-shaped. 



Homocerc [ho' -mo-serk) [ofidc, the same ; nepicog, the 

 tail]. Same as Homocercal. 



Homocercal (ho-mo-ser'-kal) [ofi6c, the same; nepnoc, 

 the tail]. In biology, applied to fishes in which the 

 caudal fin-rays are so disposed as to give the tail an 

 appearance of symmetry with respect to the axis of 

 the body. 



Homocerebrin {ho-mo-ser' '-e-brin) \_6/x6q, like ; cere- 

 brum, cerebrum]. A substance derivable from brain- 

 tissue, closely resembling cerebrin, but more soluble 

 in alcohol. 



Homochromous [ho-mo-kro' -mus) \_6fi6g, the same ; 

 Xptifia, color] . In biology, all of one color, as the 

 florets in a flower-head, or an entire organism. 



Homocinchonidin (ho-mo-sin-kon' '-id-in) {_6p,6g, the 

 same; cinchona], C 19 H 22 N 2 2 .' An alkaloid derived 

 from South American Red-bark, one of the Cin- 

 chonas. 



Homodermic (ho-mo-der'-mik) [ou.6e, the same ; 

 dkpfia, the skin]. In biology, of similar blastodermic 

 origin ; applied to tissues or organs. 



Homodesmotic (fio-mo-des-mof -ik) \_6[i6c, like; deo/xdg, 

 bond]. Connecting centers of equal importance (as a 

 nerve-fiber). 



Homodont (ho f -mo-dont) \o\i6g, the same; b86vg, 

 tooth]. In biology, having the teeth alike through- 

 out. 



Homodromous (ho-mod' '-ro-mus) \bfiog, the same ; 

 6p6p.og, a course]. In biology, applied to plants in 

 which the spiral arrangement of the leaves on the stem 

 and branches is alike throughout. 



Homodynamy (ho-mo-di' '-nam-e) [6p,6g, the same ; 

 6'vvap.ig, power]. In biology, serial homology; ap- 

 plied to homologous parts (somites or metameres) 

 arranged along the long axis of the body. 



Homceo- [ho'-me-o-). For words thus beginning, see 

 Ifomeo-. 



Homogamous (ho-mog' -am-us) [bfi6g, the same ; 

 ya/iog, marriage]. In biology, having all the florets 

 of the inflorescence alike in sex. 



Homogamy {ho-mog' -am-e) [bfi6g, same ; yap-og, mar- 

 riage]. I. Romanes' term for that method of evolu- 

 tion by physiologic selection of those varieties, the in- 

 dividuals of which are fertile among themselves, but 

 less fertile or sterile with other varieties and with the 

 parent-stock. It is called also Segregate Fecundity 'by 

 (iulick. See Evolution. 2. In biology, applied to 

 hermaphrodite flowers that mature their stigmas and 

 anthers at the same time. 



Homogen [ho' -mo-Jen) [6u6g, the same ; ytvog, race]. 

 In biology: I. Derived from the same or similar 



parents; having a common ancestor. 2. One of two 

 organs or organisms having a common ancestor or an- 

 cestral part. H., Ancestral, i. e. , homogenetic homo- 

 logues that do not arise similarly, though probably 

 descended from common ancestral parts, e. g., the legs 

 of flies of diverse development. H., Developmen- 

 tal, /'. e. , homogenetic homologues that arise similarly, 

 whether descending from the same ancestral part or 

 not, e.g., some of the cranial bones of a Teleostean 

 and of a mammal. 



Homogeneity (ho-mo-jen-e 1 '-it-e) [opog, like ; yevog, a 

 kind]. The condition of being homogeneous. 



Homogeneous (Jio-mo-je' ' -ne-us) [op.6g, like ; ytvog, 

 kind]. Having the same nature or qualities. Sim- 

 ilar or identical in structure. H. Immersion. See 

 Immersion. H. Triplets. See Homogeneous Twins. 

 H. Twins, in embryology, when the cleavage-force 

 is exerted to its fullest effect, the entire embryonal 

 trace is completely divided ; each resulting part may 

 be capable of independent development, whereby two 

 fetuses are produced remarkable for their great simi- 

 larity ; such offspring are known as homogeneous 

 twins. They are always of the same sex and possess 

 almost perfect identity of physical characteristics. So 

 also may a secondary fission of one of the halves take 

 place, as an extremely rare occurrence, homogeneous 

 triplets resulting from such twofuld division of the 

 original area. Such fetuses usually lie within a single 

 chorion, enclosed by a separate or a common amni- 

 otic sac, the increased pressure arising from the 

 unusual contents of the limited uterine cavity favoring 

 absorption and disappearance of the amniotic parti- 

 tions. 



Homogenesis (ho-mo-jen' -es-is) [6p6g, like ; yevvav, 

 to beget]. Univocai generation ; reproduction in 

 which a living parent gives rise to offspring that 

 pass through the same cycle of changes as itself. 



Homogenization (ho-mo-Jen-iz-a' '-shun) \_6fi6c, the 

 same; yewdv, to produce]. The act or process of 

 rendering or of becoming homogeneous ; reduction to 

 a common standard ; the process of rendering the 

 objects of microscopic study transparent and fixed. 



Homogenous (ho-moj' '-en-us) \6p6g , the same ; ytvog, 

 race]. In biology, applied to structures that are 

 genetically related, in so far as they have a single 

 representation in a common ancestor. 



Homogentisic Acid [liom-o-jen-tiz' -ik). See Acid. 



Homogeny (Jio-moj' -en-e) [ouoyevrjg, of the same race or 

 family]. In biology, an agreement among organisms 

 depending on the inheritance of a common part or 

 having a common ancestor. See Homogenesis. 



Homogonous (ho-mog'-on-us) \_6p6g, similar ; ydvog, 

 offspring]. In biology, having the stamens and pistils 

 alike in all the flowers of the species ; homostyled. 

 Cf. Heterogonous. 



Homoio- [ho' '-moi-o-) . For words thus beginning, see 

 Homeo-. 



Homoiosis {Jw-moi-o'-sis). See Homeosis. 



Homologize (lio-moF-o-jiz) \6fi6g, the same; Xiyetv, to 

 speak]. In biology : I. To recognize as homologous ; 

 2. To exhibit homology ; to correspond in structure. 



Homologous [ho-mol'-o-gus) [6/n6c, the same ; / 

 to speak]. In biology, corresponding in structure, 

 either directly or as referred to a fundamental type. In 

 chemistry, being of the same chemic type or series! 

 differing by a multiple or an arithmetic ratio in certain 

 constituents, while the physical qualities are analogous, 

 with small differences, as if corresponding to a series 

 of parallels. H. Tissues, those identical in type of 

 structure. H. Tumor, a name given by Virchow to 

 a tumor consisting of tissue identical with that of the 

 organ whence it springs. 



