HETERADELPHOUS 



564 



HETEROGENESIS 



Heteradelphous (het-er-ad-el'-fus) [erepog , other ; 

 ade7\,<j>6g , brother]. Relating to an heteradelphus, or to 

 an autosite and its parasite. 



Heteradelphus [^het-er-ad-el'-fus) [erepog, other ; ao*ek- 

 <j>6g, brother]. A joined twin-monster, consisting of 

 an autosite with an attached parasite, the head of the 

 latter being absent. 



Heteradenia (Jiet-er-ad-e'-ne-ah) [erepo;, other ; adr/v, 

 gland]. I. Normal glandular structure occurring in a 

 part normally not provided with glands. 2. Gland- 

 ular structure departing from the normal type. 



Heteradenic (het-er-ad-e'-nik) [erepog, other; adiiv, 

 gland]. Pertaining to or consisting of tissue that is 

 unlike normal glandular tissue, though essentially 

 glandular. 



Heteradenoma (Iiel-er-ad-en-o' '-mah) [erepog, other ; 

 a.&rjv, gland ; bfia, tumor : pi., Heteradenomata\. A 

 tumor formed of heteradenic tissue. 



Heteralius (het-er-a'-le-us) [erepoc, other ; aXug, a disc]. 

 A double monster in which the parasite is very incom- 

 plete — usually merely a head — and inserted at a dis- 

 tance from the umbilicus of its host, and with no direct 

 connection with the umbilical cord of the latter. 



Heterauxesis (het-er-awks-e' 'sis) [erepog, other, differ- 

 ent; avfyotg, increase]. In biology, any unsymmetric 

 growth, normal or abnormal. 



Heterecious (het-er-e' 'se-us) [erepog, other, different ; 

 okoc, a house]. In biology, parasitic upon different 

 hosts at different stages of growth. 



Hetero- (Aet'-er-o-) [erepog, other]. A Greek prefix 

 denoting diversity or unlikeness. 



Hetero-albumose (het'-er-o-al'-bu-mos). See Albu- 

 moses. 



Hetero-autoplasty (Jief '-er-o-aw' ' -to-plas-te) [erepog, 

 other; avrdg, self; trlaoaeiv, to form]. Grafting of 

 skin from one person upon the body of another. 



Heterobiophorid (het-er-o-bi-ojf'-or-id) [erepog, other, 

 different ; biophore, a bearer of vitality, from (Hog, life ; 

 <j>epeiv, to bear]. In biology, Weismann's name for a 

 primitive organism, the constituent biophores of which 

 have been differentiated, in connection with a division 

 of labor, and combined in various ways to form the 

 body of the organism. See Homeobiophorid . 



Heteroblastic (het-er-o-blas' -tik) [erepog, other, differ- 

 ent; pXaorog, germ, bud]. In biology, arising from 

 a different or abnormal source. 



Heterocarpous (het-er-o-kar' -pus) [erepog, other, dif- 

 ferent ; Kapirdg, fruit]. In biology, having more than 

 one sort of fruit. 



Heterocele (het'-er-o-sel) [erepog, other; ktjTiti, hernia]. 

 A hernia existing in some prolapsed organ, as in a 

 rectocele. 



Heterocephalous (het-er-o-sef '-al-us) [erepog, other, 

 different; iceQa/J/, head]. In biology, applied to 

 plants bearing flower-heads of more than one kind, as 

 pistillate and staminate. 



Heterocephalus {het-er-o-sef '-al-us) [erepog, other; 

 KF.tyali], the head]. A fetal monstrosity with two 

 heads of unequal size. 



Heterocercal (het-er-o-ser'-kal) [/repot;, other; nepnog, 

 tail]. In biology, having an asymmetric or unequally 

 divided tail-fin. 



Heterocerous (het-er-os' ' -er-us)[erepog , other, different ; 

 nipag, horn]. In biology, applied to a group of in- 

 sects, the members of which vary as to the form of 

 their antennae. 



Heterochromia (het-er-o-kro'-me-ah) [erepog, other; 

 XP&fia, color]. A difference in color (as between the 

 irides of the two eyes). 



Heterochromous (het-er-o-kro' -mus) [trepog, other ; 

 Xpufia, color], in biology, having different colors. 



Heterochronia (het-er-o-kro' -ne-ah) [erepog, other; 



Xpovog, time]. The production of a structure or the 

 occurrence of a phenomenon at an abnormal period 

 of time. 



Heterochronic, Heterochronous (het-er-o-kroti' '-ik, 

 het-er-ok' '-ron-us) [erepog, other ; xP^vog, time]. Ir- 

 regular in occurrence. Occurring at different times, 

 or at other than the proper time. 



Heterochrony (het-er-ok' -ro-ne) [erepog, other ; xp6vog, 

 time]. In biology, out of order as to time, as organs, 

 organisms, or hereditary traits that occur out of the 

 true ontogenetic sequence. Cf. Homeochronous. 



Heterocline (het'-er-o-klin) [erepog, other, different ; 

 kMvt], bed]. Same as Heterocephalus. 



Heterocrania (het-er-o-kra' -ne-ah) [erepog, other ; 

 Kpaviov, skull]. Headache involving but one side of 

 the head. 



Heterocyst (lief -er-o-sist) [erepog, other, different ; 

 KvaTig, a bag, pouch]. In biology, applied to individ- 

 ual cells in the moniliform rows of roundish, chloro- 

 phyl-bearing cells of the Nostocacece, which, appar- 

 ently without any definite law, vary in size and color 

 from those among which they are intercalated ; a 

 limiting-Cell. 



Heterodactyl (het-er-o-dak' -til) [erepog, other; Mk- 

 rvkog, a finger or toe]. An animal in which the 

 digits are in some way peculiar or irregular 



Heterodermotrophy (het-er-o-der-mof -ro-fe) [erepog, 

 other; <Upp.a, skin; rpotpy, nutrition]. Disordered 

 or perverted nutrition of the skin. 



Heterodont (hef -er-o-dont) [erepog, different ; bdabg 

 (bdovT-), tooth]. In biology, having more than one 

 sort of teeth, as incisors, canines, molars ; the oppo- 

 site of Homodont. 



Heterodromous (het-er-od' -ro-mus) [erepog, other ; 

 dpa/xetv, to run]. In biology, growing or turning in 

 opposite directions, as a tendril that coils first one 

 way and then the other. 



Heterodromy (het-er-od' -ro-me) [erepog, other ; fip6iiog, 

 a running]. In biology, a change in the direction of 

 the spiral in the leaves of the branches and stem. 

 Same as Antidromy. 



Heterodymus (het-er-od' -im-us) \ertpog, other; diSv/wc, 

 twin]. A double monster, the accessory part being 

 but an imperfect head, with a neck and thorax by 

 which it is implanted in the anterior abdominal wall 

 of its host. 



Heterogamous (Jiet-er-og 1 '-am-us)[eTepng , other ; ; 

 marriage]. In biology, bearing male and female 

 flowers in the same inflorescence or plant. 



Heterogamy (liet-er-og' -am-e) \erepog, other; ycifiog, 

 marriage]. In biology, a term applied to different forms 

 of sexual development arising from difference in nutri- 

 tion or environment. It is typified in the Phylloxera 

 vastatrix, the development of which is far more com- 

 plex when the insects are bred under ground, on the 

 roots of the grape-vine, compared with that when the 

 insects breed upon the leaves of the vine. In the 

 latter case the successive generations consist of apter- 

 ous, oviparous females only ; in the former the cycle 

 consists of male insects, apterous females for perpetuat- 

 ing, and winged females for spreading the species. 



Heterogeneity [het-er-o-jen-e'-it-e) [erepog, other; 

 ykvog, kind]. The condition or quality of being 

 heterogeneous. 



Heterogeneous (het-er-o-je' -ne-us) [erepog, other; 



kind]. Differing in kind or nature ; composed of 

 different substances ; not homogeneous. 



Heterogenesis (het-er-o-jen'-es-is) [erepog, different; 

 ytveaig, generation]. I. Organic deviation in tlx' 

 situation or character of organs, etc. 2. In biology, 

 a mode of biogenesis, by which the living parent 

 rise to offspring that pass through totally different 



