SPHERIC 



1352 



SPHYGMOID 



Spheric, Spherical (sfe'-rik, sfe'-rik-al). Having 

 the shape of or pertaining to a sphere. S. Aber- 

 ration. See Aberration. S. Homology, in biology, 

 Wilder' s term for the topical relation between the 

 morphically identical, converging spheromeres of a 

 radiate animal. 



Spheriform (sfe' -rif-orm) [ctyalpa, sphere ; forma, 

 form]. Spheric. 



Spheriocarcinoma (sfe -re-o- kar- sin - o'- mah) \_c$alpa, 

 sphere; Kapalvufia, carcinoma]. A carcinoma having 

 a spheric shape. 



Spherobacteria (sfe-ro-bak-te' -re-ah) [otyalpa, sphere ; 

 (iaKTTjpiov, a rod]. In Cohn's classification a genus 

 of unicellular microbes, round or oval, stationary, and 

 devoid of cilia or flagella. The micrococci. 



Spherocerebrin (sfe - ro - ser' '- e - brin) [otyalpa, a ball; 

 cerebrum, cerebrum]. A nitrogenized substance oc- 

 curring in brain-tissue among a group of cerebrina- 

 cides. 



Spherocrystal (sfe-ro-kris'-tal) [atyalpa, sphere; 

 K.p'vGTa7.7joq, crystal]. Same as sphceraphide. 



Spheroid (sfe'-roid) [ctyalpa, sphere; eidoc, like]. 

 Having the form of a sphere. A solid resembling 

 a sphere. S., Oblate, one in which the polar axis is 

 less than the equatorial diameter. S., Prolate, one 

 in which the polar axis exceeds the equatorial diame- 

 ter. 



Spheroma (sfe-ro* '-ma/i) [capaipa, sphere; 6/na, tumor]. 

 Any spheric-shaped tumor or protuberance. 



Spheromere (sfe / -ro-mer) [otyaipa, a ball ; fiipog, a 

 part]. In biology, an adinomere, q. v. 



Spherometer (sfe-rom' '-et-er) [o^>a/'p«, sphere ; perpov, 

 a measure]. An instrument for determining the de- 

 gree of curvature of optic lenses and of the tools for 

 their grinding. 



Spherosiderite (sfe-ro-sid '-er-lt). Carbonate of iron 

 in spheroidal masses, occurring in trap. 



Spherosome [sfe'- ro - som) [ afynlpa, sphere ; au/ua, 

 body]. In biology, the body-wall of a radiated 

 animal ; suggested by L. Agassiz in place of perisome. 



Spherospore (sfe' -ro-spor) [tr^aZpa, a sphere ; <T7r6poc, 

 a seed]. In biology, Agassiz' name for a tetra- 

 spore. 



Spherular (sfe' -ru-lar) [dim. of o<paipa, a sphere]. 

 Resembling a spherule. 



Spherulate (sfe* '-ru-lat) [dim. of otyalpa, sphere]. In 

 biology, studded with spherules. 



Spherule {sfe' -rut) [otyaipa, sphere] . A globule. S., 

 Segment. See Sphere, Segmentation. 



Sphincter (sfingk' -ter) [c<f>cynT?'/p ; otyiyyeiv, to squeeze] . 

 A muscle surrounding and closing an orifice. S. 

 ani. S. vaginae. See Ahiscles, Table of. S. of the 

 Pupil. See Iris. S., Third, of the rectum, a dupli- 

 cature of mucosa projecting well into the lumen of 

 the gut from the right side, forming rather more than 

 a semicircle, and involving more of the ventral than 

 of the dorsal wall. It is also called Kohlrausch ' s 

 Fold. 



Sphincteralgia (sfingk-ter-al' -je-ah) [ofyiynrrip, sphinc- 

 ter ; aXyoc, pain]. Pain in the sphincter ani muscle, 

 or about the anus. 



Sphincterate (sfingk' '- ter - at) [ccjxyKT/'/p, sphincter]. 

 Provided with a sphincter. 



Sphincterectomy (sfingk - ter - ek'- to - mc) [o<pryKTT/p, 

 sphincter; EKropi,, excision]. Oblique blepharotomy ; 

 Stellwag's operation for the dilatation of the palpebral 

 fissure, or for blepharospasm. 



Sphincterial, Sphincteric (sfingk-te' '-rr-al, sfuigk-ter'- 

 ik) \?§iyKTi]p, sphincter]. Pertaining to a sphincter 

 or to its function. 



Sphincterismus (sfingk-ter-iz'-mus) [n(piyKT/'/f>, sphinc- 

 ter]. A spasmodic contraction of the sphincter ani 



muscle, usually attendant upon fissure or ulcer of tin 



anus, but occasionally occurring independently of sucl 



lesion. 

 Sphincterolysis (sfingk-ter-ol' -is-is) \_o0iynTr/p, sphinc 



ter; Xvmq, solution]. The operation of freeing th< 



iris in anterior synechia. 

 Sphincteroplasty (sfingk' -ter - o -plas' - te) [go 



sphincter; ir'Aacceiv, to form]. The formation of ar 



artificial sphincter by plastic operation. 

 Sphincterotomy (sfingk-ter-of '-o-me) [o<pr/KTi/p, sphir.c 



ter; Top.rj, section]. The surgical cutting of a sphinc 



ter. 

 Sphingoin (spiling* -go-in) [oyiyyeiv, to bind]. Ar 



alkaloid derived from cerebral tissue. 

 Sphingo-myelin (sfing-go-mi' -el-in) [o<piyyeiv, to bind 



fivEAoq, marrow]. A brain-phosphatid allied to ray 



elin. It is capable of being decomposed into neurit 



and a substance which is convertible into sphingosin. 

 Sphingosin (sfin' -go-sin) [o<piyyeiv, to bind]. An alka 



loidal cerebroside occurring in brain-tissue. 

 Sphingostearic Acid (sfing-go-ste-ar' -ik). See Acid. 

 Sphinxis (sfingks'-is). See Constriction. 

 Sphrigosis (sfrig-o' -sis) \a§piyav, to be full and vigor 



ous]. In biology, excessive growth of wood, sterr 



and leaves in plants. 

 Sphygmic, Sphygmical (sfig r -mik, sfig'-mik-al) \etw] 



fWioq ; otyvy/udg, pulse]. Pertaining to the pulse 



pulsatile. 

 Sphygmochronograph (sfig-mo - kro'- no -graf). Se 



Sphygmograph. 

 Sphygmodic (sfig-mo' '-dik) [otyvyfidc, pulse]. Lil 



pulse ; throbbing. 

 Sphygmogram (sfig f -mo-gram)\p<bvyp6c, pulse ; yp 



a writing]. The tracing made by the sphygm 



graph. Called, also, Pulse-tracing, Pulse-cur:;', a: 



A rteriogram . 

 Sphygmograph (sfig' -mo-graf) [o<f>vyp.6g, pulse 



(peiv, to write]. An instrument for recording graphi : 



Marey's Sphygmograph. 

 A. Steel spring. B. First lever. C. Writing lev. 

 free writing end. D. Screw for bringing 1! in contact «:' 

 G. Slide with smoked paper. H. Clockwork 

 for increasing the pressure. M. Dial, indicating the pi 

 sure. K, K. Straps for fixing the instrument to the arm 

 the arm to the double inclined plane or support. 



ally the differential features of the pulse in health i 



disease. 

 Sphygmographic (s/ig-mo-graf'-ik) \ 



ypd<peiv, to write]. Pertaining to the sphygn 

 Sphygmography ( sfig - mog'- ra - fe ) \ 



ypd<f>Etv, to write]. A description of the 



pathologic variations and their significance 

 Sphygmoid (sfig' -moid) [o(pvyft6r, pulse; 



semblance]. Resembling or having the natnrej 



continuous pulsation. 



