

LACERATE 



Lacerate (las'-er-dt) [/.anepoc, torn]. In biology, with 

 a margin appearing as if torn. L. Foramen. See 

 Foramina, Table of. 

 Laceration (las-er-a' -shun) [laceratio ; lacerare, to 

 tear]. Mechanical rupture by a tearing action, 

 whether accidental or surgical. See Dilaceration. L. 

 of the Infratrochlear Nerve. See Badal's Opera- 

 in Operations, Table of . L. of Perineum , a tear- 

 lrough the wall separating the lower extremity of 

 the vagina and rectum, which occurs occasionally to 

 women in childbirth. 

 Lacerator (las' '-er-a-tor) [lacerare, to tear]. An in- 

 strument used in effecting surgical laceration. 

 Lacertiform (las-er'-tif-orm) [lacerta, lizard ; forma, 



form]. Lizard-shaped. 

 Lacertoid (las-er'-toid) [lacerta, lizard; eidog, like]. 



Resembling a lizard. 

 Lachesis Ki'ak'-e-sis) [/.axeaic, destiny, fate]. I. A 

 genus of venomous South American reptiles. 2. The 

 venom of L. mutus (the bushmaster snake), and 

 also a homeopathic preparation of the poison. 

 Lachnanthes (lak-nan' -thez) ['/.axvr/, soft, woolly 

 hair; avdoc, a flower]. A genus of North American 

 bloodworts. L. tinctoria, red-root, is a plant popu- 

 lar in parts of the United States as an expectorant 

 and alterative in pulmonary tuberculosis. Dose of a 

 io per cent, tincture, TT^x. Unof. 

 Lachrymal (lak'-rim-al). See Lacrymal. 

 Lacinia (las-in' -e-ah) [L. , a lappet, flap, as of a gar- 

 ment://., Lacinue]. In biology, one of the fimbriae 

 at the ovarian extremity of the oviduct ; a narrow lobe, 

 as in an incised leaf; or, specifically, the slender apex 

 of the maxilla of a beetle. Cf. Galea. 

 Laciniate (las-in' -e-at) [lacinia, a flap]. In biology, 



fringed; cut into narrow flaps. 

 Laciniform (las-in' -if -orm) [lacinia, a flap ; forma, 



form]. In biology, fringe-like. 

 Laciniola \las-in-i' -o-lah) [dim. of Lacinia: pi., La- 



la]. In biology, a small lacinia. 

 Lacinula [las-in' -u-lah) [dim. of Lacinia, a flap: //., 



Lacinula]. In biology, a small lacinia. 

 Lacmoid (lak' -moid). Same as Resorcin-blue. 

 Lacmus (lak'-mus). See Litmus. 



Lacquer Jak'-er) [Pg., lacre, sealing-wax]. An 

 opaque varnish containing lac. L., Burmese, a 

 natural varnish consisting of a thick, grayish terebin- 

 thinous liquid, collected from the Melanorrhaea usita- 

 ma of Burmah. It dissolves in alcohol, turpen- 

 e-oil, and benzene, assuming greater fluidity, 

 ally, it is used in lacquering furniture, temples, 

 idols, and varnishing vessels. 

 Lacrima (lak'-ritn-ah). See Lacryma. 

 Lacrimal (lak'-rim-al). See Lacrymal. 

 Lacryma (lak'-rim-ah) [L.: pi., Lacryma]. A tear. 

 Lacrymal (lak'-rim-al) [lacryma, a tear]. Having ref- 

 erence to the organs of the secretion, transfer, or ex- 

 cretion of tears. L. Apparatus, the lacrymal gland, 

 ducts, canal, sac, and nasal duct. See Eye. L. 

 Artery, the first branch of the ophthalmic artery, sup- 

 plying the gland. See Arteries, Table of. L. Bone, 

 ^bone upon the nasal side of the orbit, articulating 

 ith the frontal , the ethmoid, and superior maxillary 

 >nes, in which begin the lacrymal groove and nasal 

 duct. See Boms, Table of. L. Canals, or Canal- 

 lculi, supericr and inferior, extend from the lacrymal 

 puncta to the sac, and serve to convey the excess 

 of tears from the eye to the nose. See Canal. L. 

 Caruncula. See Caruncle. L. Crest. See Crest. 

 L. Ducts, seven to fourteen in number, extending 

 obliquely from the gland to the fornix conjunctivae, 

 carrying the tears to the conjunctival surface of the 

 globe. See Duct. L. Gland, the gland secreting the 



651 LACTAMID 



tears, situated in a depression of the frontal bone, the 

 L. fossa, at the upper and outer angle of the orbit. 

 See Gland. L. Lake, the inward prolongation of the 

 palpebral fissure of the eyelids. L. Papilla. See 

 Papilla. L. Probe, a probe for exploring or dilating 

 the canaliculi and nasal duct. L. Puncta, the minute 

 orifices of the canaliculi, upon the eyelids near the 



7 1823* 

 Relations of the Eye and the Lacrymal Excretory 



Apparatus. 



i,i. Canaliculi. 2,2. Puncta lacrymalia. 3.3- Inner extremity. 



of tarsal cartilage. 4, 4. Free borders of lids. 5. Lacrymal 



sac. 6. Attachment to maxillary bone of superior tendon. 



7. Bifurcation of lacrymal sac. 8, 8 Two branches. 



inner canthus. L. Sac, a sacciform enlargement of 

 the upper part of the nasal duct, into which the cana 

 liculi empty. L. Style, a probe used in stricture 

 of the nasal duct. L. Tubercle. See Tubercle. 



Lacrymation (lak-rim-a' -shun) [lacryma, a tear]. An 

 excessive secretion, or an overflow, of tears, from any 

 cause. 



Lacrytnatome (lak-rim' -at-om) [lacryma, tear; tout), 

 cutting]. A cutting-instrument used in dilating the 

 nasal duct or the canaliculi ; a syringotome. 



Lacrymiform (lak-rim' -if orm) [lacryma, a tear; 

 forma, form]. In biology, tear-shaped ; guttiform. 



Lacrymin (lak' -rim-in). See Dacryolin. 



Lacrymotomy (lak rim-ot / -o-me) [lacryma. tear; tout], 

 cutting]. The division of strictures of the lacrymal 

 passages. 



Lactagogue (lak' -tag- og). See Galactagogue. 



Lactalbumin (lakt-al' -bu-min) [lac, milk ; albumin]. 

 A proteid contained in milk in small quantities — % of 

 1 per cent. It resembles serum-albumin very closely, 

 differing in specific rotatory power, in its coaguability 

 by heat, and in its precipitation of neutral salts. 



Lactamic Acid (lak-tam'-ik). See Alanin. 



Lactamid (lak'-tam-id) [lac, milk; amid], C,H 7 - 

 NO,. A substance formed by the union of lactid and 

 ammonia. It forms crystals readily soluble in water 

 and in alcohol, and melts at 74 C. 



