AMPHIASTER 



70 



AMPHORA 



Amphiaster in an 

 Ovarian Egg. 



Amphiaster [am'-fe-as-ter) [autyi, 

 around; aari/p, a star]. In 

 biology, the figure formed in 

 both direct and indirect cell divi- 

 sion, by the achromatin threads 

 and chromatin granules united to 

 form the so-called nuclear spin- 

 dle, together with the threads 

 of cell-protoplasm radiating from 

 a rounded clear space at each 

 end of the spindle known as 

 the stars or suns. 



Amphibia [atn-fib'-e-ah) {afi^i, both; fiioc, life]. A 

 class of the Vertebrata, living during their life both 

 in the water and upon the land, as the frog, newt, etc. 



Amphibious [a?n-fib' -e-us) [aficpL, both ; jilog, life]. 

 Living both on land and water. 



Amphiblastic [am-fe-blas / -tik) [d//0t, on both sides ; 

 ji'/.aaToc, a germ]. In biology, pertaining to that 

 form of complete segmentation that gives rise to an 

 amphiblastula. 



Amphiblastula [am- 

 fe-b 'las' '-tu- lah) [afi- 

 <pi, on both sides ; 

 dim. of fi/.aardg, a 

 germ]. In biolo- 

 gy, the mulberry- 

 mass or morula- 

 stage in the de- 

 velopment of a holo- 

 blastic egg. It fol- 

 lows the stage 

 known as amphi- 

 morula. 



Amphiblestritis [am- 

 fe-bles-tri' -lis) \api- 

 <pi^7,rj<jTpov, a net ; 

 cng, inflammation]. 

 Inflammation of the 

 retina. 



Amphiblestroid [am-fe-bles f -troid) \aii$ifi}jiaTpov, a 

 net ; ddog, form]. Net-like. A. Membrane, the 

 retina. 



Amphibolia (om-fe-bo' '-le-ah) \_afi^>Lfio7ja, uncertainty]. 

 The vacillating period of a fever or disease. 



Amphibolic [am-fe-bol' -ik) [d/^>//?o/loc, uncertain]. Un- 

 certain ; doubtful. A qualification applied by Wunder- 

 lich to a period in the febrile process occurring between 

 the fastigium and the defervescence, and marked by 

 irregular exacerbations and remissions. 



Amphibranchia [am-fe-brang' '-ke-ak) [a/j.<j>i, around ; 

 (ipayxM, the gills]. The tonsils, pharynx, and naso- 

 pharynx. 



Amphicarpic [am-fe-kar' '-pik). Same as Amphicar- 

 pous. 



Amphicarpous [am-fe-kar f -pus) [a/i<pl, on both sides, 

 around; Kapndr, fruit]. In biology, producing fruit of 

 two kinds, either as regards form or season of ripening. 



Amphicelous [am-fe-se f -lus) [d/^t, at both ends ; noi?.og, 

 hollow]. In biology, biconcave, as the center of the 

 vertebra; of fishes. 



Amphicrania [am-fr-kra'-ne-ah) [d»©/, both ; Kpav'mv, 

 the skull]. Headache affecting both sides of the head. 



Amphicreatin [am-fe-kre'-at-in) [a/ufti, around ; uptag, 

 flesh], < ,,l l|,,\-i > r One of the muscle-leucomaTnes. 

 It crystallizes in brilliant oblique prisms of a yellowish- 

 white color. It is tasteless and faintly basic. It 

 resembles creatin in its properties. 



Amphicreatinin {am-ff-hre-at'-in in) [«//<*/, around ; 

 Kfitaf, flesh], (,' 9 H„,N' 7 0,. A member of the creatinin 

 group of leucomalnes said to have toxic qualities. It 

 is derived from muscle. 



. Amphiblastula. 

 a, Granular cells which will form the 

 epiblast. b. Ciliated cells which 

 become invaginated to form the 

 hypoblast. {After Balfour.) 



Amphid (am' -fid) [afityi, both]. In chemistry, a name 

 given to a salt of an acid containing oxygen ; that is, 

 a name given to salts other than haloid. 



Amphideum [am-fid'-e-um) \an<pidia, a ring : pi. , Am- 

 phidea\ The margin or edge of the os uteri. 



Amphidiarthrosis [am-fe-di-ar-thro' -sis) [a/upi, both ; 

 diapOpucug, articulation]. The articulation of the 

 lower jaw, as it partakes of the nature both of 

 ginglymus and arthrodia. 



Amphidisc, Amphidisk [am' '-fe- disk) [d//0/, at both 

 ends ; dianog, a round plate]. In biology, a sponge- 

 spicule consisting of an axil terminated by two toothed 

 discs. 



Amphigenous [am-fif -en-tts) [a/iQi, both; yevoc, kind]. 

 In biology, growing indifferently on both sides, as 

 certain parasitic fungi. 



Amphigony [am-fig' '-o-ne) [a/x^i, on both sides ; y6vog, 

 offspring] . The sexual process in its broadest sense ; 

 gamogenesis. 



Amphimixis [am-fi-rniks' -is) [afi<j>i, on both sides ; 

 /uific, mixing]. In biology, the mingling of two 

 individuals or their germs ; sexual reproduction. 



Amphimonerula (am-fe-mo-ner' -u-lah) [a/iipi, on both 

 sides; fiovrjpr/g, single]. In biology, the monerula 

 or cytode-stage of an unequally segmenting, holo- 

 blastic egg. 



Amphimorula {am-fe-mor' -u-lafi) \amphi, on both 

 sides ; morula, a mulberry]. In biology, the morula, 

 or globular mass of cleavage cells resulting from 

 unequal segmentation, the cells of the hemispheres 

 being unlike in size. 



Amphioxus [am-fe-oks'-us) [afi(f>i, both ; 6f/r, sharp]. 

 A genus of fishes tapering at both ends, the lancelet. 



Amphipyrenin [am-fe-pi-re' '-nin) \_nfJ-(j)i, around ; nvpi/v, 

 mass]. The nuclear membrane of a cell. 



Amphismela [am-fis-me' '-lah) [«//</>/', both ; iti/A>/, a 

 probe]. A double-edged surgical knife. 



Amphisphalsis (am-fe-sfaF-sis) [a/i<p!<j(j)a?>cig , a throw- 

 ing or turning round]. Circumduction, as of a limb 

 in reducing a luxation. 



Amphistoma [am-fis' '-to-mah) [a/ify'i, double ; cr6fta t 

 mouth]. A genus of trematode worms, named from 

 the mouth-like apparatus at either end. One species, 

 A. hominis, has been found in the large intestine of 

 man, in the tropical regions. See Parasites, Table of. 



Amphistylic [am-fe-sti' -lik) [hfupi, on both sides; 

 crvTiog, a pillar]. In biology, having styles or 

 supports on both sides, as the mandibular arches of 

 sharks. 



Amphithect [am f -fe-thekt) [d//0/, on both sides ; drjnrbq, 

 sharpened]. In biology, having unequal angles or 

 surfaces. 



Amphitoky [am-fif '-o-ke) [afiqi, both ; t6koq, produc- 

 ing]. The production of both male and female forms 

 in parthenogenesis. 



Amphitropous [am-fif '-ro-pus) [d//0/, around ; rpirrecv,, 

 to turn]. I. In biology, having the funiculus attached 

 to the ovule midway between the chalaza and micro- 

 pyle. 2. Having a C-shaped embryo. 



Amphodiplopia [am-fo-dip-lo'-pe-ah) [n//0w, both; 

 (hn?i6og, double ; on/;, eye]. Double vision affecting 

 each of the eyes. 



Ampho-peptone [am-fo-pep' -ton). See Peptones. 



Amphophile [am'-fo-fil) [d//^u, both; $0,t~tv,\.o love]. 

 Readily stainable alike with acid and basic dyes (a 

 qualification applied to certain histological and pathojl 

 logical elements). 



Amphophilous [am-fof-il-us) [d//0w, both ; <j>i7v'iv, to 

 love]. Staining with either alkaline or acid dyes. 



Amphora [am'-fo-rah) [ofityi, on both sides ; tf>opevc, a 

 bearer]. In biology, the lower portion of a seed' 

 capsule, or pyxidium. 



