LEUKOCYTOSIS 



334 



LEYDENIA GEMMIPARA 



Leukocytosis. (See Illus. Diet.) L., Agonal, that 

 occurring just before death ; also called terminal or 

 moribund leukocytosis. L., Cachectic, L., Hydre- 

 mic, that attended by hydremia. L., Digestion, a 

 physiologic form ; there being an appreciable increase 

 in the number of leukocytes in most healthy individuals 

 within an hour after taking food. [Da Costa.] L. 

 due to Thermal and Mechanical Influences, a 

 transient increase of leukocytes in the peripheral blood 

 produced by active local or general muscular exercise ; 

 by brief exposure to atmospheric cold ; by cold baths, 

 or by the application of electricity or massage. [Da 

 Costa.] L., Ether. See L., Toxic. L., Inflam- 

 matory, that in which the lymph is concentrated in 

 the cells while the blood is normal. L. of the New- 

 born, a physiologic form ; the blood of the infant at 

 birth containing two or three times the number of leu- 

 kocytes found in the blood of normal adults. [Da 

 Costa.] L. of Pregnancy and Parturition, a 

 moderate physiologic increase in the number of leuko- 

 cytes which occurs in the blood of a majority of primi- 

 paras. L., Pathologic, that increase in the number 

 of leukocytes, involving chiefly the polynuclear neutro- 

 phil cells, which is associated with a variety of patho- 

 logic conditions, mainly inflammatory, infectious, and 

 toxic in character [Da Costa.] L., Physiologic, a 

 temporary and moderate increase in leukocytes asso- 

 ciated with purely physiologic conditions. L., Post- 

 hemorrhagic, a pathologic form commonly observed 

 as the result of hemorrhage due to traumatism or other 

 causes. L., Preagonal. See L., Terminal. L., 

 Spathologic, a form produced by the administration 

 of drugs, chemicals, organic principles, bacteria, bac- 

 terial proteins, and by the application of intense irri- 

 tants and revulsives to the surface of the body. [Da 

 Costa.] L., Terminal, the increase in the number of 

 leukocytes to be observed in the peripheral circulation 

 just before death. L., Toxic, a pathologic form found 

 in poisoning by ptomains, by coal-gas, as the result of 

 ether narcosis, and in convulsions and acute delirium. 

 [Da Costa.] 



Leukocytotaxis. See Leukotaxis. 



Leukocytozoa \lu-ko-si-to-zo'-ah) \7^evn6g, white; kitoc, 

 cell; C<~mv, animal]. Infusorian parasites of the white 

 blood-corpuscles. 



Leukoencephalitis {lu-ko-en-sef-al-i' -lis) [Xevnor, 

 white; eyKE<p(i?.or , brain]. An epizootic disease of 

 horses characterized by drowsiness, imperfect vision, 

 partial paralysis of the throat, twitching of the muscles 

 of the shoulder, unsteady gait, and softening of the 

 white substance of the frontal lobes ; also called forage 

 poisoning. 



Leukokeratosis (lu-ko-ker-at-o'-sis). See Leukoplakia 

 (Illus. Diet.). 



Leukolytic. See Leukocytolytic. 



Leukomelous {lu-kom'-el-us). See Leukomelanic (Il- 

 lus. Diet.). 



Leukonuclein (lu-ko-nu' '-kle-in). A decomposition- 

 product of nucleohiston by action of hydrochloric acid. 



Leukonychia [lu-kon-ik'-e-ah) [Xevkoc, white; bvv$, 

 nail]. A whitish discoloration of the nails owing to 

 the presence of air beneath them. 



Leukopenia (lu-ko-pe'-ne-ah) [/.cvk^c, white; irevia, 

 poverty]. A decrease below the normal standard in 

 the number of leukocytes in the peripheral blood. Also 

 called Uypoleukocytosis ; Hypoleukocythemia ; Oligo- 

 cythemia. 



Leukopenic {lu-ko-pe / -nik). Relating to or marked by 

 leukopenia. L. phase, Lowit's term for the initial 

 stage of hypoleukocytosis. 



Leukopheous, Leucophseous (lu-ko-fe'-us) [/.evk6c, 

 white; <j>ai6g, dusky]. Dusky-white, ash-colored. 



Leukoplakia. (See Illus. Diet.) L., Lingual. See 

 L. buccalis (Illus. Diet.). 



Leukoplania (lu-ko-pla' -ne-ali) [/.ev/coc, white; rr/rm/, 

 a wandering]. The wandering of leukocytes or their 

 passage through a membrane. Syn., Leukocytoplania. 



Leukopsin (lu f -kop-sin) [Acv/uic, white; dip, eye]. 

 Visual white, produced from rhodopsin by the action 

 of light. 



Leukorrhea, Leucorrhcea. (See Illus. Diet.) L., 

 Anal, L. analis. See Hemorrhoids, White. 



Leukotactic (lu-ko-tak'-tik) \7.evn6r, white ; rd^iq, ar- 

 rangement]. Relating to leukotaxis. 



Leukotaxis {lu-ko-taks'-is). The arranging and order- 

 ing function of leukocytes. Syn., Leukocytotaxis. 



Leucotoxic i^lu-ko-toks'-ik). Destructive to leukocytes. 



Leucotoxin (lu-ko-toks'-in) [/.evade;, white; to^ik6v, 

 poison]. A cytotoxin obtained by E. Metchnikoff 

 from lymphatic ganglia. Cf. Hemotoxin, Llepatotoxm, 

 JVephrotoxin, Neurotoxin, Spermatoxin, Trichotoxin. 



Leukotrichia (lu-ko-trik'-e-ah) [/Uwcdc, white; Spi^ 

 hair]. Whiteness of the hair, canities. L. annularis. 

 See Ringed Hair (Illus. Diet.). 



Leukourobilin (Nencki) [lu-ko-u-ro-bi' -lin) [/.ewerfc, 

 white; ovpov, urine ; bills, bile]. A colorless decom- 

 position-product of bilirubin. 



Levicoochre (lev-ik-o-o'-ker). A mud containing 

 iron and arsenic, obtained from the springs at Levico 

 in the Tyrol. It is applied in the form of a hot 

 poultice in chronic inflammation. 



Levigate. (See Illus. Diet.) 2. Smooth. 3. Uniform; 

 applied to the reddening in skin-diseases. 



Levisticum (lev-is 1 '-tik-um) [Liguria, a country of 

 Cisalpine Gaul]. A genus of umbelliferous plants 

 containing but one species. L. officinale, Koch, 

 lovage, indigenous to middle Europe; the root, plant, 

 and fruit are diuretic and used in dropsy and amenor- 

 rhea. Dose of fid. ext., 15-60 tt^ (0.9-3.7 c.c.). 



Levity (lev'-it-e) \_levitas, lightness]. The antithesis 

 of gravity. 



Levoduction (lev-o-duk' '-shun) \_larvus, left; ducere, to 

 lead]. The movement of the eye to the left. 



Levoglucosan (lev-o-glu' '-ko-san) [Icevus, left; j/wi'f, 

 sweet]. A derivative of picein obtained by heating 

 the latter with baryta. 



Levotorsion (lev-o-tor 1 '-shun) \lirvus, light; to> qucre, 

 to twist]. A turning or twisting toward the left. 



Levoversion (lev-o-vur' '-shun) \_Lsvus, left; vertere, to 

 turn]. See Levotorsion. 



Levulosemia (lev-u-lo-se' '-me-ah) [Icevus, left ; aiua, 

 blood]. The presence of levulose in the blood. 



Levuretin (lev-u' '-re-tin) [Fr., levure, yeast]. A prepa- 

 ration of dried brewer's yeast used in skin-diseases. 

 Dose, I teaspoonful (5 c.c.) in milk, 3 times daily. 



Levurin {le-J-u-rin) [Fr., levure, yeast]. A dried ex- 

 tract of beer yeast; used in cases of. sepsis. Dose, 1 

 teaspoonful (5 c.c.) 3 times daily. 



Lewa, Lewah. The Indian name for a thick viscid 

 fluid, consisting of pure and impure opium, passewah, 

 and the washings of vessels used in the manufacture of 

 opium. It is employed to glue together the petals of 

 the poppies covering opium balls. 



Lewisia (lu-is'-e-ah) [Meriwether Lewis, explorer, 

 1774-1809]. A genus of plants of the order Tor- 

 tulacect, indigenous to the western United States. L. 

 rediviva, Pursh., the chita, bitter-root, spathum, racine 

 amere; the mucilaginous, starchy root is used largely 

 by the Indians as a food. 



Ley (//) [ME.]. Lye. 



Leydenia gemmipara, Schaudinn. A name given to 

 the large round or polymorphous cells with lively 

 ameboid movement discovered by v. Leyden (1876) in 

 the ascitic fluid in cancer patients. Their relationship 



