HYOSCINE 



177 



HYPOGENE 



Hyoscine, (hi'6-sin). [Gk. hys, pig.] CeH 13 N : 



an amine obtained from hyoscyamine ; an 



oily liquid. 

 Hyoscyamine. (hl-os-sl'a-mln). [Hyoscyamus, 



q.v.] An alkaline principle obtained from 



the plant Hyoscyamus. 

 Hyoscyamus, (hi -os-si'a-mus). [Gk. &ys,hog; 



kyamos, bean.] = Henbane : a poisonous 



herb, belonging to Solauacese. 

 Hypapophyses, (hl-pa-pofi-ses). [Hypo.under; 



Apophysis, q.v.] Ventral processes from the 



body of the vertebrae, v. Skeleton. 

 Hypaxial, (hl-paks'i-al). [Gk. hypos, under; 



Axis, q.v.] Processes below the centre of 



the vertebral column. 

 Hyper, (hl'per). [The Greek word.] A prefix 



implying above or excess. 

 Hyperaesthesia, ( hf-per-ez-thg'si-a ). [Hyper, 



q.v.; aisthesis, feeling".] Excessive sensibility; 



induced by chloral hydrate, &c. 

 Hyperanthera, (hl-per-au'ther-a). [Hyper and 



Anther, q.v.] A sub-genus of Muringa, q.v. 



H. moringa : horse-radish tree. 

 Hyperapophyses, (hl-per-a-pofi-se'z). [Hyper 



and Apophysis, q.v.] Processes in the verte- 

 brae, extending from one vertebra to the 



next; not found in man. 

 Hyperbola, (hi-pei/bol-a). [Hyper, q. v.: Gk 



ballo, I throw.] One of the conic 



sections: a curve in which the 



distance of any point from a 



given point called the focus is 



greater, in a given ratio, than 



its distance from a given line 



called the directrix. 

 Hyperboloid, ( hl-perTio-loid ). 



[Hyperbola, q.v. ; Gk. eidos, 



form.] A solid figure formed by 



the revolution round its axis of Hyperbola. 



an hyberbola. 

 Hypericacese, (hl-per-i-ka'se-e). [Hypericum, 



<?.v.]=Tutsans: resinous plants, belonging to 



Guttiferales. 

 Hypericum, (hl-per'i-kum). [Hyperikon, the 



Greek name.]=St. John's Wort: a plant, the 



type of Hypericacese. H. androscemum= 



Tutsan. 

 Hyperion, (hT-pe'ri-on). [Classical.] One of 



the satellites of Saturn. 

 Hyperodapedon, (hi-per-o-dapVdon). [Hyper, 



q.v. ; Gk. odous, tooth; dapedon, pavement.] 



A land reptile-like animal, having many 



palatal teeth, remains of which are found in 



Upper Trias and Upper Elgin Standstone. 

 Hyperodon, ( hl-per'o-don ) = Bottle-nosed 



whale, &c. v. Hyperoodon. 

 Hyperoodon, (hl-per-6'o-don). [Gk. hyperoa, 



palate; odous, too th.]= Bottle-nosed whale 



=Balsena rostrata. v. Whale. 

 Hypersthene, (hi'pers-then). [Hyper, q.v.; 



sthenos, strength.] A variety of pyroxene; 



resembling hornblende ; a mineral, chiefly 



composed of silicates of iron and magnesia. 



H. rock: contains labradorite and hyper- 



sthene. 



Hypertrophied, (hT-per'tro-fid). [Hyper, q.v.; 



trophy food.] Overgrown: enlarged unduly 



from excess of food. 

 Hyperuric acid, v. Uric acid. 



Hyphae, (hi'fe). [Gk. hypha, web.] Cells in 

 fungi and lichens: growing apically; having 

 no chlorophyll. 



Hyphaene, (h!-fen). [Hyphaino, to entwine.] 

 ^Gingerbread tree, doom-palm: a tree be- 

 longing to Palmacese. 



Hyphepus, (hl'fe-pus). [Gk. hypha, web; 

 pans, foot.] An extinct lizard. 



Hyphomycetes, (hl-fo-ml-se'tez). [Gk. hypha, 

 web; mykes, mushroom, ]=Moulds: a primary 

 division of Fungales, chiefly filamentous, 

 with sj)ores at the extremities, v. Botry tacese. 



Hypnotic, (hlp-not'ik). [Gk. hypnos, sleep.] 

 Inducing sleep: soporific. 



Hypo, (hi'po). [Gk. hypo, under, below.] A 

 prefix, implying a less degree, inferior posi- 

 tion, or smaller quantity. 



Hypoblast, (hi'po-blast). [Gk. hypo, under; 

 btastos, sprout.] The inner layer of the cells 

 of blastoderm. 



Hypobranchials, (hl-po-brang'ki-alz). [Hypo 

 and Branchial, q.v.] The lower portion of 

 the branchial arches, or supports of the gills 

 in fishes. 



Hypobromous acid, (hi-po-bro'mus). [Hypo 

 and Bromine, q.v.]=HBrO: an unstable acid. 



Hypochaeris, (hl-po-kg'ris). [Hypo, q.v.; Gk. 

 dhoiras, pig.]=Cat's ear: an herb, belonging 

 to Asteraceae. 



Hypochloric acid, (hi-po-klo'rik.) [Hypo and 

 Chloric, q.v.] ClOa=Peroxide of chlorine. 



Hypochlorites, (hl-po-kl5'rits). [Hypo and 

 Chlorite, q.v.] Compounds of hypochlorous 

 acid with bases. 



Hypochlorous acid, (hl-po-klo'rus). [Hypo 

 and Chlorous, g.v.]=HClp=Hydric hypo- 

 chlorite: a pale yellow liquid of acrid taste. 



Hypochondriac, (hi-po-kon'dri-ak). [Gk. hypo, 

 under; chondros, cartilage.] The region of 

 the abdomen on each side of, and below the 

 stomach. 



Hypochthon, (hi-pok'thon)=Proteus, q.v. 



Hypoclinea, (hi-po-kli'ne-a). An ant, the 

 young of which is preyed on by Ecitou, q.v. 



Hypocotyledones, (hl-po-kot-i-le'donz). [Hypo 

 and Cotyledon, q.i?.]=:Hypovitellians : Van 

 Beneden's term for Vertebrata. 



Hypocrateriform,(hi-po-kra'ter-i-form). [Hypo 

 and Crater, q.v.]=Salyer-shaped. 



Hypocycloid, (hl-po-si'kloid). [Hypo and 

 Cycloid, q.v.] The curve traced by a point 

 in the circumference of a circle, when rolling 

 upon the concave arc of another circle. 



Hypodermiae, (hl-po-der'mi-e). [Hypo and 

 Derma, q.v.] v. Fungi, Bach's classification of. 



Hypogaei, ( hi-po-je'i ). Subterranean puff- 

 ball fungi, belonging to Gasteromycetes. 



Hypogallic acid, (hi-po-gal'lik). [Hypo and 

 Gallic, q.v.] C 7 H 6 O4. v. Gallic acid. 



Hypogastric, ( hi-po-gas'trik ). [Hypo and 

 Gastric, q.v.] Under the stomach. H. plexus: 

 a union of sympathetic nerves in the pelvis. 

 Hypogeic acid, (hi-po-je'ik). [Hypo and 

 Geic, q.v.] An acid obtained from the oil of 

 ground-nut. 



Hypogene rocks, (hi'po-jen). [Gk. hypo, 

 under; ginomai, born.] Granite, gneiss, &c., 

 rocks, formed below the surface : also called 

 primary, primitive, and crystalline: divided 



