

SESAMOID 



1319 



SHACKLE 





Sesc 



Sesamoid (ses' '-am-oid ) [of/oauov, a grain ; eidoc, 

 form]. Resembling a grain. S. Bones, small bones 

 (cartilaginous in early life) developed in tendons 

 submitted to much pressure. 



Sesamoiditis (ses-am-oi-di'-tis) [orjoauov, a grain ; eldog, 

 like; trig, inflammation]. Inflammatory disease of 

 the sesamoid bones of the fetlock of the horse. 



Sesamum (ses' -am-um) [aijaauov; .gen., Sesami]. A 



enus of old-world plants, chiefly African. S. orient - 



e (or S. indicum) is widely cultivated for the oil 



f its seeds ; called also benne, til, etc. See Sesami, 



Oleum. 



Sesqui- (ses'-k-oe-) [L. , one and one-half]. A prefix 

 denoting one and one-half. 



Sesquialter [ses-kive-al f -ter) [sesqui, one-half more ; 

 . another]. In biology, a large spot with a 

 smaller one in the center ; a sesquiocellus. 



Sesquibasic (ses-kwe-ba'-zik) [sesqui- , one-half more; 

 " air, base]. Applied to salts formed from a tribasic 

 id by the replacement of three atoms of hydrogen 

 y two of a basic element or radicle. 



Sesquiocellus (ses-kwe-o-sel' -us) [sesqui, one-half more ; 

 ocellus, a little eye: pi. , Sesquiocelli]. In biology, a 

 large spot with a smaller one in the center of it ; a 

 sesquialter. 



Sesquioxid (ses-kwe-oks'-id) [sesqui-, one-half more; 



. acid]. A compound of oxygen and another 



element, containing three parts of oxygen to two of 



the other element. S. of Iron, ferric oxid, a salt of 



iron having the composition Fe 2 O s . 



Sesquisalt (ses'-kwe-sawlt) [sesqui ; ME., salt, salt]. 

 A salt which contains one and one-half times as much 

 of a given radicle as a protosalt. 



Sessile (ses'-il) [sessilis, sedere, to sit]. Attached by a 

 broad base ; not pedunculated ; e. g. , a sessile tumor. 

 In biology, not stalked ; inserted directly on the axis, 

 as when a leaf-blade is attached directly to a stem. 

 S.-eyed, in biology, having eyes without stalks. 



Seta [se'-tah) [seta, a bristle: //., Setts'], In biology, 

 a stiff, stout, bristle-like appendage ; a chseta, vibrissa. 



Setaceous (se-ta'-se-us) [seta, a hair, a bristle]. In 

 biology, bristly, bristling, bristle-shaped. 



Setaceum (se-ta'-se-um). See Seton. 



Setiform (se'-tif-orm) [seta, a bristle ; forma, form]. 

 Bristle-like in shape. 



Setigerous, or Setiferous (se-tif -er-us , se-tif -er-us) 

 [seta, bristle; gerere or fer re, to bear]. In biology, 

 bearing bristles or stiff hairs. 



Setiparous (se-tip' -ar-us) [seta, a bristle ; parere, to 

 bear]. In biology, producing bristles or setse, e.g., 

 certain glands. 



Setireme (se f -tir-lm) [seta, a bristle ; remus, &n oax]. 

 In biology, applied to the leg of an aquatic insect or 

 other animal when beset with setae. 



Seton (se'-ton) [seta, a bristle]. I. A thread, or skein 

 drawn through a fold of the skin, so as to maintain an 

 issue. 2. A sinus kept from healing by the introduc- 

 tion and drawing through it of a thread. S. -needle, 

 a needle used in passing a seton through the skin. 



Setschenow's Inhibitory Center. A hypothetic cere- 

 bral mechanism for the inhibition of reflex movements. 

 It is supposed to be located in the corpora quadrigem- 

 ina and the oblongata. 



Setula (set'-u-lah) [dim. of seta, a bristle : //., Setulte]. 

 A diminutive bristle. 



Seven (sev'-n) [ME., seven, seven]. A numeral. S.- 

 bark, the plant Hydrangea arborescens. See Hydran- 

 gea. See also Nine-bark. S. -day Fever. Synonym 

 J( Relapsing Fever. S. -days' Disease. Synonym 

 of Trismus. 



Sevum (se'-vum) [L.: gen., Sevt]. Suet. The adipose 

 tissue or fat from the abdomen of the sheep, strained 



and clarified. It is soluble in benzine and ether, and 

 consists mainly of stearin, with a small percentage of 

 palmitin and olein. It is used in the preparation of 

 ointments and liniments. 



Sewage (su'-dj) [ME., sewer, a canal]. The hetero- 

 geneous substances constituting the excreta and waste 

 matter of domestic economy and the contents of drains. 

 It consists mainly of putrescent animal and vegetable 

 tissues, fecal matter, and urine — the latter in a state of 

 ammoniacal fermentation — mixed with water or dis- 

 solved in it. In the process of fermentation, marsh- 

 gas, ammonia, hydrogen sulphid, and other gases are 

 freely given off, and as these are more or less soluble 

 in water, an ordinary water-trap only partially prevents 

 their passage. In addition, the constituents of the 

 solution are such as to form an excellent culture-fluid 

 for numerous pathogenic microbes, especially those 

 constituting the contagium of cholera, typhoid fever, 

 and similar diseases. S. -farming, use of sewage as 

 a manure. S. -fungus. See Beggiatoa alba under 

 Bacteria, Synonymatic Table of . 



Sewer (su'-er) [ME., sewer, a canal]. A canal for the 

 removal of sewage. S.-air Throat, acute tonsillitis. 

 S.-gas, the mixture of air, vapors, and gases, which 

 emanates from sewers. It varies greatly in respect to 

 its pathogenic qualities. S.-g. Pneumonia. See 

 Pneumonia. 



Sewerage (su'-er-aj) [ME., server, a canal]. The col- 

 lection and removal of sewage. 



Sewing Spasm. See Spasm. 



Sex- (seks) [L.]. A numeral used as a prefix, meaning 

 six. 



Sex (seks) [sexus, also secus, sex]. In biology, the 

 state or condition of being either male or female. See 

 Law, JCof acker- Sadler' ' s. 



Sexdigital, Sexdigitate (seks-dif '-it-al ', seks-dij'-itdt) 

 [sex, six ; digitus, a finger]. Having six fingers or 

 six toes. 



Sexdigitism (seks-dif '-it-izm) [sex, six ; digitus, finger] . 

 The condition of having six digits on a hand or foot. 



Sexiferous (seks-if -er-us) [sex, six ; ferre, to bear]. 

 Having sexual organs. 



Sextan (seks' -tan) [sex, six]. A malarial fever in 

 which the paroxysms occur every sixth day. 



Sextuplet (seks-tiip f -let) [sex, six]. One of six off- 

 spring from a single gestation. 



Sexual (seks'-u-al) [sexus, sex]. Pertaining to sex. 

 S. Bondage, the dependence of one person upon 

 another of the opposite sex that is abnormal but not 

 perverse. S. Diseases, diseases of the sexual organs. 

 S. Intercourse, copulation. S. Inversion, a variety 

 of sexual perversion in which there is an abnormal 

 liking for a person of the same, instead of for one of 

 the opposite sex. S. Metamorphosis, a variety of 

 sexual perversion in which the individual has the 

 tastes and feelings and assumes the dress and habits 

 of the opposite sex. S. Selection. See Evolution. 



Sexualia (seks-u-a'-le-ah). See Gonades. 



Sexuality (seks-u-al' -it-e) [sexus, sex]. The collective 

 differences which in an individual make one male or 

 female. 



Sexually (seks' '-u-al-e)[sexus , sex]. In a sexual manner. 



Sexvalent (seks-va' -lent) [sex, six ; valere, to be worth] . 

 Having an atomicity of six. 



Shab (shab). See Scab. 



Shackle (shak'-l) [ME., schakkyl, shackle]. Some- 

 thing that hinders or confines. S. -joint, a variety ot 

 articulation formed by passing a bony ring of one 

 part through a perforation of another part. It is seen 

 in the exoskeleton of some fishes. S.-vein, a vein 

 of the horse, probably the median antebrachial, from 

 which blood was formerly abstracted. 



