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coloured from the rest of the body ; 

 having crests on the head ; having 

 wing-shaped expansions on the 

 neck, as in the cobra (zool.}. 



hordeaceous (hor'dea'shus) a. [L. 

 hordeum, barley.] Pert, or resem- 

 bling barley (&?/.). 



horizontal (hor'fzon'tal) a. [Gk. 

 horizon, bounding.] Growing in a 

 plane at right angles to the primary 

 axis (hot.}. 



hormogonium (hor'mogo'nium) n. 

 [Gk. hortnos, chain ; goneia, genera 

 tion.] That portion of an algal 

 filament between two heterocysts 

 which, breaking away, acts as a 

 reproductive body (boll.}. 



hormones (hormon'z) n. plu. [Gk. 

 honnao, to excite.] The secretions 

 of ductless glands which pass into 

 the blood - vessels by osmosis 

 (phys.}. 



horn (horn) n. [A.S. horn] The 

 process on the head of many 

 animals ; any projection from an 

 animal resembling a horn ; a tuft 

 of feathers as in an owl ; a spine 

 in fishes ; a tentacle in snails 

 (zool.} ; an awn ; any pointed pro- 

 jection or process (bot.). 



horn core, the central bony part in 

 the hollow-horned ruminants (zool.}. 



host (host) n. [L. hostis, stranger.] 

 Any organism in which another 

 organism spends a part or the 

 whole of its existence, and derives 

 some of its nourishment therefrom 

 (biol.}. 



house (hows) n. [A.S. fas.] The 

 external gelatinous-like covering 

 secreted by certain Tunicates(.sw>/.). 



humeral (hu'me'ral) a. [L. humerus, 

 the shoulder.] Pert, shoulder 

 region (anat.} ; pert, or naming the 

 anterior basal angle of the wing of 

 an insect, one of the horny plates 

 on the plastron of a turtle (zool.}. 



humerus (hu'me'rus) n. [L. humerus, 

 shoulder.] The bone of the upper 

 arm (anat., zool.}. 



humistratous (hii'mistra'tiis) a. [L. 

 humus, earth ; sternere, to spread.] 

 Spreading over the surface of the 

 earth (hot.}. 



humour (hu'mor) n. [L. humor, 

 moisture.] The fluid of the eye 

 (anat.} ; any fluid or juice (phys.}. 



humus (hu'miis) n. [L. humus, earth.] 

 A dark soil-like material formed 

 by the decomposition of vegetable 

 or animal matter (hot.}. 



hunger (hung'ger) n. [A.S. hungor] 

 The sensation caused normally by 

 the lack of food (phys.}. 



husk (husk) n. [M.E. huske.] The 

 outer coating of various seeds (hot.}. 



hyaline (hfalm) a. [Gk. hyalos, 

 glass.] Clear ; transparent ; free 

 from inclusions (biol.}. 



hyalogen (hl'alqje'n) n. [Gk. hyalos, 

 glass ; gignesthai, to produce.] 

 Any of the substances found in 

 animal tissues which are insoluble 

 and related to mucoids (phys.}. 



hyaloid (hfaloid) a. [Gk./tyatos,g\ass.] 

 Glassy ; transparent (phys.}. 



hyaloid membrane, a delicate mem- 

 brane enveloping the vitreous body 

 of the eye (anaf.J. 



hyalomucoid (hl'alomu'koid) n. [Gk. 

 hyalos, glass ; L. mucus, mucus ; 

 Gk. eidos, like.] One of the non- 

 phosphorized gluco-proteids in the 

 vitreous humour (phys.}. 



hyaloplasm (hl'aloplazm) n. [Gk. 

 hyalos, glass ; plasma, something 

 moulded.] The ground substance 

 of the cell as distinguished from 

 the microsomes, or as distinguished 

 from the reticulum or spongioplasm 

 (zool.} the ectoplasm or peripheral 

 zone in plant cells (bot.}. 



hyaloplasma, hyaloplasm. 



hyalopterous (hfalop'tgrus) a. [Gk. 

 hyalos, glass ; pteron, wing.] Having 

 transparent wings (zool.}. 



hyalosome (hi'alosom') n. [Gk. hyalos, 

 glass ; soma, body.] A nucleolar- 

 like body in a cell-nucleus, only 

 slightly stainable by nuclear or 

 plasma stains (biol.}. 



hybrid (hl'brid) n. [L. hibrida, 

 a cross.] Any cross-bred animal 

 or plant (biol.}. 



hybridism (hl'bridizm) n. [L. hibrida, 

 a cross.] The state or quality of 

 being a hybrid (biol.}. 



hybridization (hl'brldiza'shun) n. [L. 

 hibrida, a cross.] Act or process 

 of hybridizing ; state of being 

 hybridized (biol.}. 



hybridize (hl'brldlz) v. [L. hibrida, 

 a cross.] To interbreed, to produce 

 hybrids (biol.}. 



