

LAXCIFORM 



657 



Lanciform (Ian' -sif-orm) [lancea, lance ; forma , form]. 

 Lance-shaped. 



Lancinate (lan'-sin-dt) [lancinare, to tear]. To lacerate, 

 to pierce, or tear. 



Lancinating [lan'-sin-a-ting) [lancinare, to tear]. 

 Tearing ; shooting. L. Pains, rending, tearing, or 

 sharply-cutting pains, common in posterior spinal 

 sclerosis. 



Lancing (Ian' -sing). See Lance. 



Lancisi, Nerves of. The stria longitudinales . The 

 slight ridges of the callosum of the brain bounding 

 the raphe. See A'eri'es, Table of. 



Landmarks [land' -marks) [ME., landmark, the boun- 

 dary of a country]. Superficial marks (such as emi- 

 nences, lines, and depressions) that serve as guides to, 

 or indications of, deeper-seated parts. The knowledge 

 of landmarks is of the utmost importance, both to the 

 surgeon and the physician. 



Landolphi's or Landolfi's Paste. A caustic applica- 

 tion composed of the chlorids of zinc, antimony, 

 bromin. and gold, which is used pure, or weakened by 

 mixing with basilicon ointment in varying propor- 

 tions. It should be spread on the surface with a 

 spatula, or applied on charpie, and allowed to remain 

 for 24 or 48 hours. 



Landolphia (lan-dol'-fe-ah) [after Capt. Landolph, an 

 explorer]. A genus of tropical climbing shrubs, in- 

 cluding the African rubber-tree, a source of caoutchouc. 



Landolt's Method. A method of determining insuffi- 

 ciency of the internal recti muscles. A small lamp or 

 candle is surrounded by a blackened chimney, a ver- 

 tical slit in which serves as an object of fixation. The 

 light is then approximated to the eyes, and when the 

 internal recti are no longer able to maintain the nec- 

 essary convergence, two images of the slit are seen. 



Landouzy-Dejerine Type. A type of muscular 



, atrophy. See Diseases, Table of. 



Landry's Disease or Paralysis. Acute ascending 

 paralysis ; a form of atonic paralysis described by 

 Landry, characterized by loss of motor power in 

 the lower extremities, gradually extending to the 

 upper extremities, and to the centers of circulation 

 and respiration, without characteristic sensory mani- 

 festations, trophic changes, or variations in electric 

 reaction. See Diseases, Table of. 



Land- scurvy. See Purpura hemorrhagica. 



Landzert, Angle of. See Angle. 



Lanesin, or Lanessin (lan'-es-in) [lana, wool]. A 



! proprietary preparation of wool-fat similar to lanolin. 



Lanfranc's Collyrium. A stimulant application to 

 ulcers, containing aloes and myrrh, each 5 parts ; ace- 

 tate of copper, 10 parts ; trisulphid of arsenic, 15 parts ; 

 rose-water, 380 parts, and white wine, 1000 parts. 



-ang's Oil. See Gray Oil. 



Lange's Method. A method of testing for C0 2 in the 

 air. It consists in shaking in a bottle full of the air 

 to be tested, a half ounce of clear fresh lime-water. 

 If the air contains 7 parts per iooo of C0 2 , a turbid- 

 ity of the fluid will occur. 

 Langenbeck's Operation. See Operations, Table of. 

 Langerhans' Cells. Certain modified epithelial cells 

 forming the simplest nerve-endings. L.'s Granular 

 Layer, the stratum granulosum of the epidermis. 

 Tangier's Apparatus. A form of immovable splint for 



1 a limb. It is composed of strips of brown paper 

 impregnated with starch-paste. L.'s Bandage. See 

 Bandage. 

 <angley, Oxyntic Cells of. See Delomorphous. L.'s 



Test. See Tests, Table of. 

 .anguage (lang'-gwdj) [lingua, the tongue]. The ar- 

 ticulate sounds, signs, or symbols whereby thought is 

 communicated. L., Center for. See Aphasia. 

 42 



LAPARELVTROTOMY 



Languor (lang / -g7vor)[L., faintness]. Lassitude. Dis- 

 inclination" to take bodily exercise, or to exert one- 

 self. 



Laniaries or Laniary Teeth (la' ' -ne-ar-e-ez) [Denies 

 laniarii : laniare, to rend]. The cuspid teeth; ap- 

 plied more particularly to those of carnivorous ani- 

 mals. 



Laniariform (la-ne-ar' -if-orm) [laniare, to rend ; 

 forma, shape]. Shaped like the canine teeth of car- 

 nivora. 



Laniary {la* '-ne-a-re) [laniare, to tear, rend]. In 

 biology, applied to well-developed canine or lacerating 

 teeth. 



Lanigerous (lan-ij'-er-us) [lana, wool ; gerere, to bear]. 

 In biology, producing, or covered with wool or a 

 woolly growth ; lanate ; lanose ; lanuginous. 



Lank [ME., lank, lank]. Lean, thin, attenuated. 



Lanoleum (lan-o'-le-um). See Lanolin. 



Lanolin (lan'-o-lin) [lana, wool; oleum, oil]. A 

 cholesterin-fat obtained from sheep's wool, introduced 

 as a basis for ointments. It does not saponify or 

 become rancid, and is characterized by remarkable 

 penetrative powers. 



Lanose (la'-nos) [lana, wool]. In biology, woolly; 

 wool-like ; lanate. 



Lantana {Jan-la' -nah) [L.]. A genus of verbenaceous 

 shrubs and herbs, principally natives of tropical 

 America. A few grqw native in the U. S. L. acu- 

 leata is an aromatic stomachic. L. brasiliensis 

 and L. camara are among the antipyretic species. 

 Unof. 



Lantanin (Ian' -tan-in) [lantana~]. An alkaloid ex- 

 tractive of Lantana brasiliensis , called Verba sagrada. 

 It is asserted to have antiperiodic and antipyretic pro- 

 perties, and has been successfully used in intermittent 

 fevers. Dose, gr. xv-xxx. Unof. 



Lantermann's Notches or Segments. Conico-cyl- 

 indric segments in the medullary sheath of a nerve- 

 fiber ; they are marked off from one another by the 

 incisures of Schmidt. 



Lantern of Aristotle, or Aristotle's Lantern. In 

 biology, the oral skeleton of a sea-urchin. L.-jaws, 

 a colloquialism for a long, thin visage. 



Lanthanum (lan'-than-um), or Lanthanium (lan-tha'- 

 ne-um) [/.aifidveiv, to conceal ; lanthanum was a sub- 

 stance concealed from the knowledge of chemists]. 

 A rare metallic element ; symbol La., atomic weight, 

 138. Little is known of its medicinal properties. 

 See Elements, Table of. 



Lanthopin (lan'-tho-pin) [?.av6dvetv, to conceal], 

 C 23 H,-N0 4 . A finely crystalline alkaloid of opium. 

 It occurs in white crystals fusible at 200 C. 



Lanuginose, Lanuginous (lan-u'-jin-os, lan-u' -jin-us) 

 [lanuginosus, wooly]. In biology, woolly, downy, 

 lanate, lanose, lanigerous. 



Lanugo (lan-u' -go) [lana, wool]. The down-like hair 

 that appears upon the fetus at about the fifth month of 

 gestation ; the downy growth often seen upon the face 

 of women and girls. L. prima, the first growth of 

 beard. L. pudendorium, pubic hair. 



Lap [ME., lappen : Gr., /.arreir, to lap with the 

 tongue]. 1. To lick up. 2. A lick. 3. That part 

 of the body formed by the anterior aspect of the 

 thighs. 



Lapactic (lap-ak'-tik) [J.a-zaoaeiv, to empty]. I. Emp- 

 tying; evacuant. 2. Any purgative substance. 



Lapara (lap' -ar-ah) [/.a-apoc, loose]. 1. The loins ; 

 loosely applied to the abdomen. 2. Diarrhea. 



Laparacele (lap'-ar-as-el). See Laparocele. 



Laparectomy (lap-ar-ek' -to-me). See Enterectomy. 



Laparelytrotomy (lap-ar-el-it-rot'-o-me). Same as 

 Laparo-elytrotomy. 



