CKI.OM 



277 



CENTER 



Celom, or Celoma (se'-lom, or se-lo' '-ma/i) [koiAcj/iu, a 

 cavity]. A term used by embryologists and others 

 to denote the body-cavity in its widest morphologic 

 sense ; the space between the exoderm and the endo- 

 derm. 



Celophlebitis [se-lo-fU-bi' -tis) [nolAog, hollow ; <p/.hp, 

 vein; mr, inflammation]. Inflammation of a vena cava. 



Celophthalmia [se-loff-thal' -me-ah) [Kotkog, hollow; 

 ;„,ti,iAui>r, eye]. Hollowness of the eyes. 



Celoscope {se'-lo-skop) [koZXoc, hollow; anonelv, to 

 observe]. An instrument for examining the cavities 

 of the body by means of the electric light, enclosed 

 in a tlask and mounted upon a glass shank. 



Celosis (se-lo'-sis) \_koiaoc, hollow]. The formation of 

 any cavity. 



Celosoma (se-lo-so'->nah) [Kfjfab hernia ; aufta, a body]. 

 I. A species of single autositic monsters characterized 

 by "more or less extensive body-cleft with eventration, 

 associated with various anomalies of the extremities, of 

 the genitourinary apparatus, of the intestinal tract, 

 and even of the whole trunk." 2. A variety of the 

 foregoing species in which there is a lateral or median 

 eventration, with fissure, atrophy, or even total absence 

 of the sternum, and protrusion of the heart. 



Celostomia (se-h-sto / -me-ah) [koIaoc, hollow; crofia, 

 mouth]. Hollowness of the voice. 



Celotome (se'-lo-tom) [«////, hernia; refiveiv, to cut]. 

 A hernia-knife. 



Celotomy (se-lot'-o me) [k/'/a//, hernia ; rifiveiv, to cut]. 

 The operation for strangulated hernia by incision of 

 the stricture. 



Celsus's Operations. See Operations, Table of. 



Celtis (sel'-tis) [L., an African species of lotus]. A 

 genus of ulmaceous trees. C. australis, the European 

 nettle-tree, honey-berry, or lote, has mild, astringent 

 leaves and bark. C. occidentalis, the hackberry of 

 N. America, has edible, astringent berries; the bark 

 is said to be anodyne, astringent, febrifuge. Unof. 



Cement (se-ment') \coementum,a. rough stone]. Any 

 plastic material capable of becoming hard and of 

 binding together the objects that are contiguous to it ; 

 filling-material for the teeth ; the crusta petrosa of the 

 teeth. See Teeth. C.-disc, the glandular disc of 

 orchids. C.-duct, the duct of the cement-gland in 

 cirriped crustaceans. C, Shellac, a cement for seal- 

 ing microscopic preparations and for making shallow 

 cells. It is prepared by dissolving the gum or scales 

 of shellac in about an equal volume of alcohol. Decant 

 or lilter the fluid, and to prevent brittleness add to 

 every 50 parts 5 parts each of castor oil and Venetian 

 turpentine. 



Cementoblast (se-menf '-o-btast) \c<zmentum, cement; 

 J/aaroQ, germ]. A cement-corpuscle in tooth-tissue ; 

 more correctly, an osteoblast that takes part in the de- 

 velopment of the dental cement. 



Cemento-dentinary (se-ment-o-den / -tin-a-re) \ccement- 

 um, cement; dens, dentis, a tooth]. Relating to the 

 cement and dentine of a tooth. 



Cementoma (se-ment-o / -maA) \camentum, cement; 

 a, tumor: pi. , Cemeniomatd] . A tumor thrown out 

 by the irritated alveolar periosteum. 



Cementum [se-menf -nm). See Tooth and Cement. 



Cenanthy (se-nan' -the) \jtev6g, empty; avdog, flower]. 

 In biology, that condition of a flower in which the 

 stamens and pistils are suppressed. 



Cenchrus (seng'-krus) [/cey^poc, a small grain]. In 

 biology, a small spot on the metathorax of an insect. 



Cenesthesis {sen-es-the' -sis) \_Koiv6q, common; alat- - 

 feeling]. A sense of existence, either painful or pleasur- 

 able. It is the prevailing conscious state of feeling, 

 either of depression or of exaltation, which is the 

 resultant of the subconscious organic sympathies oi 



the whole organism. It does not exceed physiologic 



limits so long as it if elude the normal exercise 



of mental fundi' 

 Cenogenetic (se-nojen-et' '-ik ) \ttoiv6q, common; 



trs " :'> generation]. In biology, a modi lied, shortened, 



and simplified mode of developm 

 Cenogenous {sen-oj r -en-us) [_KOiv6g, common; 



produced]. In biology, the power of reproducing by 



means of eggs at one time and viviparously at another, 



as seen in the Aphides. 

 Cenosis {sen-o'-sis) [/ccvujkc, a draining]. Evacuation; 



up' icenosis. 

 Cenosphaera [sen-o-sfe' ' -rah ) \_KEv6g, empty ; o<pa 



sphere]. In biology, the spherical skeleton of certain 



radiolarians. 

 Cenospudia (sen-o-spu'-de-ah ) [/cevrfc, empty ; airovAr/, 



zeal]. " Drown study ; " mental absorption, or anxiety 



with regard to unimportant matters. 

 Cenotic {sen-ot'-ik) \_nevuaig, a draining]. Cau-in^ 



cenosis ; drastic ; purgative. 

 Centaurea (sen-taw* -re-ah ) \jckvravpoQ, centaur]. A 



genus of composite flowered herbs. C. benedictus. 



See Carduus. C. centaurium, the greater centaury 



of Europe, is aromatic, astringent, diaphoretic, and 



stomachic. C. cyanus, corn-flower, blue-bottle ; 



once used for fevers and in preparing collyria. C. sol- 



stitialis, Barnaby's thistle ; diuretic and antipyretic. 

 C. nigra, of Europe (knap-weed, centaury), is as- 

 tringent and diuretic. All unof. 

 Centaury (sen' -taw-re) \centauriq\ A popular name 

 for various plants of the genera Centaurea, Eryth, 

 Sabbatia, Chlora, etc. It is used as a simple, bitter 

 tonic. Dose Jss-j in decoction several times a day. 

 Unof. 

 Center (sen'-ier) \jdvrpm>, the center]. The middle 

 point of any surface or of a body. The ganglion or plexus 

 whence issue the nerves controlling a function. C, 

 Accelerating, a probable center in the medulla sending 

 accelerating fibers to the heart. They leave the cord 

 through the rami communicantes of the lower cervical 

 and upper six dorsal nerves, passing thence into the 

 sympathetic. C, Ano-spinal, controls defecation; 

 it is situated at the level of the 5th, 6th. and 7th lumbar 

 vertebrae ; but for the co-ordinated activity it must 

 remain in connection with the brain. C, Auditory, 

 probably in the temporo-sphenoidal lobes, upon each 

 side. C., Broca's. See C, Speeeh. C, Cardio- 

 inhibitory, in the medulla, carried by the vagus. C, 

 Cilio-spinal, connected with the dilatation of the 

 pupil ; it is in the lower cervical part of the cord. It 

 controls the movements of the ciliary body. C, 

 Convulsional, in the medulla, on the floor of the 4th 

 ventricle. C. for Closure of Eyelids, in the medulla, 

 a part of the facial center. C, Coughing, in the 

 medulla, above the respiratory center. C, Diabetic, 

 in the posterior part of the anterior half of the floor 

 of the 4th ventricle, in the median line. C, Ejacula- 

 tion, Rudge's genito-spinal center, 4th lumbar vertebra 

 (rabbit). C, Erection, is in the spinal cord, but is 

 controlled from the medulla. C. for Mastication 

 and Sucking, facial and hypo-glossal centers. C. 

 for Secretion of Saliva, on the floor of the 4th 

 ventricle. C, Gustatory and Olfactory, in the 

 uncinate gyrus. C, Heat-regulating or Tem- 

 perature, the center for the control of body-tem- 

 perature. See Thermotaxis. C, Leg, in the as- 

 cending frontal convolution. C, Micturition, the 

 vesico-spinal center of Budge, at the level of the 

 lumbar vertebrae ; coordination requires cerebral 

 connection. C. of Ossification, the place in b( 

 at which ossification begins. C, Parturition, at the 

 level of the 1st and 2d lumbar vertebr.e. C, Respir- 



