CENTERING 



278 



CEPHALEMATOMA 



atory, in the oblongata, between the nuclei of the vagus 

 and accessorius ; called by Fluorens the Notud Vital, 

 or Vital Point. C, Sensory, or Psychosensorial 

 Areas, occipital and temporosphenoidal lobes, probably 

 the same as, or intimately associated with, the motor 

 centers of the parts. C, Sneezing, same as for nerves 

 for the muscles of expiration. C, Spasm, in the ob- 

 longata, at its junction with the pons. C, Speech, 

 in the third left frontal convolution in right-handed 

 people. C, Swallowing, on the floor of the 4th 

 ventricle. C, Sweat, the dominating center is in the 

 oblongata, with subordinate spinal centers. C, Tro- 

 phic. See Trophic. C, Upper, for Dilator Pupillae, 

 in the oblongata. C, Vasodilator, probably exists 

 in the oblongata, with a function the opposite of that 

 of the vaso-motor. C, Vasomotor, in the oblongata. 

 C, Vesicospinal. See Micturition C. C, Visual, 

 in the occipital lobe, especially in the cuneus. 



Centering (sen' '-ter-ing) [nevrpov, a center]. In micro- 

 scopy, the arrangement of an object or an accessory 

 so that its center coincides with the optic axis of the 

 microscope. In optics, having the pupil and the 

 optical center of the refracting lens in the same axis. 



Centesimal. In the proportion of 1 to 100. 



Centigrade (sen'-te-grad) [centum, a hundred ; gradus, 

 a step]. Abbreviation, C. Having 100 divisions or 

 degrees. C. Thermometer, a thermometer with zero 

 as the freezing point and ioo° as the boiling point of 

 water. See Thermometer. 



Centigram (sen' '-te-gram\ [centum, a hundred ; ypaufia, 

 a small weight] . The hundredth of a gram, equal to 

 0.1543 of a grain avoirdupois, or one-sixth of a grain 

 Troy. 



Centiliter (sen'-til-e-ter) [centum, a hundred ; "khpa, a 

 pound]. The hundredth of a liter, equal to 0.6102 

 of an English cubic inch. 



Centimeter (sen' ' -tim-e-ter) [centum, a hundred ; ucrpov, 

 a measure]. The hundredth part of a meter, equal to 

 0.39371 (or about |) of an English inch. 



Centinormal (sen-te-nor' '-mal) [centum, a hundred ; 

 norma, normal]. The T ^ w of the normal ; applied to 

 a solution the T ^ of the strength of a normal solution. 



Centrad (sen' -trad') [centrum, the center; ad, to]. 

 Toward the center, or toward the median line. See 

 Position and Direction, Table of. 



Central (sen' '-tral) [centrum, the center]. Relating to 

 the center ; passing through the center. See Position 

 and Direction, Table of. C. Artery, an artery in 

 the optic nerve and retina; it passes to the optic 

 papilla and then divides. See Arteries, Table of. C. 

 Ganglia, the corpora striata and thalami optici. C. 

 Ligament, the terminal filum of the spinal cord. See 

 Ligament. C. Lobe, the island of Reil. C. Stop. 

 See Diaphragm. 



Centraxonial (sen-traks-o / -ne-al) [nevrpov, center; 

 a^uv, axis]. In biology, having a central axial line. 



Centre (sen'-tcr). See Center. 



Centren (sen'-tren) [centrum, a center]. Belonging 

 solely to a center. 



Centric, Centrical (sen f -trik, sen' '-trik-al) [centrum, 

 a center]. Relating to a center, especially to a nerve- 

 center. In biology, a term applied to the internal 

 structure of such leaves as show no distinctly devel- 

 oped pallisade-tissue, and no considerable structural 

 differences between the upper and under surfaces. 



Centricipital (srn-tris-ip'-it-al) [centrum, center; caput, 

 a head]. Relating to the centriciput ; parietal. C. 

 vertebra, the second or more central of the three 

 principal cranial vertebrae. 



Centriciput (sen-Iris' -ip-ul) [centrum, center; caput, 

 head]. The mid-head: the second cranial segment 

 situated between the sinciput and occiput. 



Centrifugal (sen-trif'-u-gal) [centrum, the center; 

 fugere, to flee]. Receding from the center toward 

 the periphery. C. Nerves, those (mostly motor) 

 conveying impulses toward the peripheral parts of the 

 body. 



Centrifugalized Milk. Milk from which the cream 

 has been separated by whirling it in a centrifugal 

 machine. 



Centripetal (sen-trip' -et-af) [centrum, the center ; 

 petere, to seek]. Traveling toward the center from the 

 periphery. C. Nerves, those (mostly sensory) convey- 

 ing impressions from the peripheral organs toward the 

 cerebro-spinal nervous system. 



Centro-acinal, or Centro-acinar (sen-tro-as' -in-al, or 

 cen-tro-as' '-in-ar) [centrum, center; acinus, a grape]. 

 Belonging to the center of an acinus. C. Cells are 

 found in the acini of the pancreas, etc. 



Centrolecithal (sen-tro-les' -ith-al) [ntvTpov, center ; 

 XeKidog, yolk]. In embryology, having the food-yolk 

 centrally located in the protoplasm. 



Centrosoma (sen-tro-so' -mah) [nevrpov, center ; cufia, 

 body: pi. , Centrosomata~\. The central mass or body 

 of any corpuscle, as distinguished from its appendages. 

 C. of Boveri, in embryology, a separate central body 

 contained in the sphere of attraction, at the pole of 

 the resting nucleus in a dividing ovum. 



Centrosome (sen'-tro-som). See Centrosoma. 



Centrostigma (sen-tro-stig'-mah) [ahrpov, center; 

 OTly/ua, a point]. In morphology, having all the axes 

 converging to a central point. 



Centrotriaene (sen-tro-tri' '-e-ne)[nevTpov , center ; rpiaiva, 

 a trident]. In morphology, a triaene spicule whose 

 arms arise from a central bundle or rhabdom. 



Centrotylote (sen-trot' -il-ot) [nevrpov, center ; tv/uti'k, 

 knobbed]. In biology, swollen in the middle. 



Centrum (sen'-trum) [L.]. The center or middle part; 

 the body of a vertebra, exclusive of the bases of the 

 neural arches. C. Anospinale, Budge's, the center 

 for the movements of the anal sphincters, located in 

 the cord at the level of the fifth lumbar vertebra in 

 the dog, and between the sixth and seventh in the 

 rabbit. C. Ovale Majus, the large mass of white 

 matter appearing when either of the hemispheres is 

 cut down to the level of the corpus callosum. C. 

 Ovale Minus, the white matter appearing when 

 the upper part of a hemisphere of the brain is 

 removed. 



Cenurus (sen-u'-rus). See Cxnurus. 



Cepaceous (se-pa' -she-us) [ccepa, an onion]. Having 

 the smell of onions. 



Cephaelis (sef-a-' el-is). See Ipecacuanha. 



Cephalad (sef'-al-ad) [/cepa/l#,head; ad, to]. Toward 

 the head. See Position and Direction, Table of. 



Cephalagra (sef-al-a'-grah) [Kt^akij, head; a) pa, 

 seizure]. Gouty headache. 



Cephalalgia (sefal-al' -ge-ah) [«e0aA#, head; o/}<>f, 

 pain]. Pain in the head. The word is variously 

 qualified, as C. Anemica, C. Contagiosa, C. Influ 

 C. Epileptica, C. Nervosa, etc. 



Cephalalgic (sef-al-al'-jik) [ne(pa?J}, head ; dXyoc, pain]. 

 Relating to headache. 



Cephalanthium (sefal-an' -the-um) [/ce0a///, head ; 

 di-floc, a flower]. In biology, the capitulum, or flower 

 cluster, of one of the Composite. 



Cephalanthus (scf-al-an'-thus). See Button-bush. 



Cephalate (sef-al-dl) [net/xiM/, head]. In biology 

 possessing a head. 



Cephalea (sefal-e' -ah) [ice<pa2aia, headache]. Head- 

 ache; especially severe or chronic headache, with 

 intolerance of light and sound. 



Cephalematocele. See CephalhematoceU. 



Cephalematoma. See Cephalhematoma. 



