SIMULATION 



Simulation (stm-u-la' -shun) [simulatio ; simulare, to 

 feign]. In medicine, the feigning or counterfeiting 

 of disease. The pretence of a malingerer. 



iimulo (sim'-u-lo). The fruit of certain species of 

 Cappans, especially C. coriacea, of Peru; it is re- 

 commended as a cure for epilepsy, and possesses anti- 

 scorbutic and stimulant properties. Dose of the 

 tincture 5 ss-iij ; of the fluid extract 3J-HJ. Unof. 



•inalbin (sin-al'-bin). A neutral crystalline glucosid 

 found in white mustard, soluble in cold water. 



inamin (sin'-am-in), C 3 H 5 CN. Allyl cyanamid, a 

 substance obtained from crude oil of mustard. 



inapeleum (sin-ap-el-e' '-urn) [oivaTi, mustard ; i/xtiov, 

 oil]. Mustard-oil. 



inapin \sin'-ap-in) [aiva-i , mustard] , C^H^NOj. A 

 substance that occurs as a sulpho-cyanate in white 

 mustard. Free sinapin is soluble and decomposable. 



inapis (sin'-a-pis) [aiva-i, mustard]. Mustard. The 

 seeds of S. alba, white mustard, and S. nigra, black 

 mustard. They contain a ferment, myrosin, and a crys- 

 talline substance, which, when moistened, unite to form 

 a volatile oil of allyl sulpho-cyanid. Locally the seeds 

 act as a powerful rubefacient ; internally, as a stomachic 

 stimulant ; in large doses as an emetic. Sinapis is 

 much used locally in the form of the well-known " mus- 

 tard-plaster.'' 3., Cataplasma (B. P.), mustard- 

 poultice, contains mustard, linseed meal, and water. 

 S., Charta, mustard-paper, consists of black mustard 

 mixed with a solution of India-rubber and spread on 

 paper. S., Liniment., Comp., contains oil of mus- 

 tard 3, fld. ext. mezereum 20, camphor 6, castor-oil 

 15, alcohol q. s. S., OL, the volatile oil. Dose 



inapiscopy (sin-ap-is' -ko-pe) [oiva-xi, mustard : oko~eiv, 

 ■ iew]. The use of mustard as a test of sensory dis- 

 turbances, analogous to a similar use of metalloscopy. 



inapism (sin'-ap-izm) [aiva-iauoc ; aivarri, mustard]. 

 A mustard-plaster. 



incaline \sin'-ka!-en). Same as Cholin. 



incipital [sin-sip' '-it-al) [sinciput, the head]. Pertain- 

 to the sinciput. 



inciput rin'-sip-ut) [semi, half; caput, head]. The 

 superior and anterior part of the head. Also, the top 

 of the head ; the bregma. 



indon [sin' -don) [otvduv, linen]. A pledget or 

 dossil. 



inew (sin'-u) [ME., sinezue, sinew]. Tendinous or 

 ligamentous tissue. S. -shrunk, having some of the 

 sinews wasted ; said of horses or mules. The condi- 

 tion is mainly caused by overwork. 



ingultus 1 sing-gul'-tus) . See Hiccough. 



inigrin (sin'-ig-rin) [aiva-i, mustard]. A crystalline, 

 bitter-tasting, inodorous glucosid of black mustard, 

 soluble in water, but not in alcohol or ether. 



inistrad (sin' -is- trad) [sinister, the left hand]. To- 

 ward the left. 



inistral (sin'-is-tral) [sinister, left]. At or in the di- 

 rection of the left side of the body. See the opposite, 

 dextral; also Position and Direction, Table of . 



inistren (sin' -is tren) [sinister, left]. Belonging to 

 the sinistral side in itself. 



inistrin (sin'-is-trin) [sinister, left]. A dextrin-like 

 substance found in squills. 



inistrocerebral ysin'-is-tro-ser'-e-bral) [sinister, left ; 

 cerebrum, cerebrum]. Occurring or situated in the 

 left hemisphere of the brain. 



mistrorse (sin'-is-trors) [sinister, left; vertere, turn], 

 n biology, turning from right to left ; said of a plant 

 climbing in an opposite direction from the sun. 



inual (Hn'-u-al) [sinus, a curve]. Possessing the 

 characteristics of a sinus. 



muate (sin'-u-dt) [sinuare, to curve, swell out in 

 84 



1329 



SINUS 



curves]. In biology, wavy, or winding in and out. 

 Applied to the margins of leaves and other flattened 

 organs. 



Sinuation (sin-u-a'-shun) [sinuatus, from sinuare, to 

 bend]. I. The state of being sinuate. 2. A cerebral 

 gyre. 



Sinu-auricular (sin-u-an'-rik'-u-lar) [sinus, a curve; 

 auricula, auricle]. In biology, pertaining to the sinus 

 venosus and the auricle. 



Sinuose (sin'-u-oz). Same as Sinuous. 



Sinuosity (sin-u-os'-it-e) [sinuare, to bend]. Anfrac- 

 tuosity ; the state of being sinuous or bent. 



Sinuous (sin'-u-us) [sinuosus ; sinus, a curve] . Wavy ; 

 applied especially to tortuous fistulas and sinuses. 



Sinus (si'-nus) [sinus, a curve, fold, hollow : pi., Sinus 

 or Sinuses~\. A hollow or excavation, a cavity, re- 

 cess, pocket, dilatation, or channel in a bone or other 

 structure. The term is applied also to an abnor- 

 mal pathway or canal, usually the result of ulceration. 

 S. acusticus internus. See Canal, Internal Audi- 

 tory. S., Air, any one of the cavities within 

 bones, containing air, especially those communicat- 

 ing with the nasal passages. S. alae parvae. See 

 S., Spheno-parietal. S. amplus ureteris, the pelvis 

 of the kidney. S. ampullaceus. See Ampulla os- 

 sea. S., Anterior. See Lateral Ventricle. S. of 

 Aorta. See S. of Valsalva. S., Aortic. See S. of 

 Valsalva. S. aritii. See Lacrymal Fossa. S. arteri- 

 osus. See S. pulmonalis. S. atlantis, a depression 

 for the passage of vessels and nerves on the upper sur- 

 face of the posterior part of the arch of the atlas. S. 

 auditorius, the cavity of the tympanum. S., Basi- 

 lar. See S., Transverse. S. basilaris anterior. 

 See S., Transverse. S. of Breschet, the spheno- 

 parietal sinus. S. bulbi. See S. bulbi urethm. S. 

 bulbi rhachidici. See Fourth Ventricle. S. bulbi 

 urethrse, a dilatation of the bulb of the urethra. S. 

 canalis vertebralis, any of the spinal veins. S. 

 caroticus, S. carotidien. See S., Cavernous. S. 

 cavernosus. See S., Cavernous. S., Cavernous, a 

 large sinus extending from the sphenoid fissure to the 

 apex of the petrous portion of the temporal bone, com- 

 municating behind with the inferior and superior petro- 

 sal sinuses and receiving the ophthalmic vein in front. 

 S. cavi cranii. See S., Cranial. S. choroidien, 

 See S., Straight. S. circulaire de Ridley. See S.. 

 Circular. S. circulaire du trou occipital. See S. 

 circularis foraminis magni. S., Circular, a venous 

 sinus surrounding the hypophysis, communicating 

 on each side with the cavernous sinus. S., Circular 

 [of the placenta), a plexus of veins in the maternal 

 portion of the placenta in communication with the 

 utero-placental sinus. S. circularis. See S. , Circu- 

 lar. S. circularis foraminis magni (sen occipitalis). 

 A venous plexus surrounding the posterior margin of 

 the foramen magnum. S. circularis iridis. See 

 Canal of Schlemm. S., Clinoid. See S., Circular. 

 S. cochleae, a vein in the aqueduct of the cochlea 

 opening into the internal jugular vein. S. du cceur. 

 See Atrium. S. columnae vertebralis, the anterior 

 longitudinal spinal veins. S. communis. See 

 Utricle (2d def.). S. communis venarum cardi- 

 acarum (seu cordis). See S., Coronary (of the heart). 

 S. condylorum anterior. See Fossa intercondyloidea 

 anterior. S., Confluence. See Torcular herophili. 

 S. cordis. See Atrium. S. coronaire du placenta. 

 See S., Circular (of the placenta). S. coronarius. 

 See S., Coronary (of the heart). S., Coronary (of 

 the heart), a vein in the transverse groove between 

 the left auricle and the left ventricle of the heart on 

 its posterior aspect ; it is by some regarded as a dila- 

 tation of the great cardiac vein into which it opens. 



