LURIDITY 



710 



LYCOIDES 



forans, lupus ulcerating through the skin into a mu- 

 cous cavity, or through the septum between two mu- 

 cous cavities. L. phagedaenicus, ulcerating lupus 

 associated with phagedena. L. prominens. See 

 Lupus tuberosus. L. -psoriasis. See L. erythematosus 

 disseminatus. L. rodens. See L. exulcerans. L. 

 scrofulosus. See Scrofuloderma tuberculosum. L. 

 sebaceus. Synonym of L. erythematosus. L. se- 

 borrhagicus. Synonym of L. erythematosus. L. 

 serpiginosus, a term applied to lupus that spreads or 

 creeps on peripherally while cicatrizing centrally. L. 

 solitarius, lupus vulgaris confined to a single patch. 

 L. superficialis. Synonym of L. erythematosus. L., 

 Syphilitic, a form of tubercular syphilid which is likely 

 to ulcerate serpiginously, and closely simulates lupus 

 vulgaris. It is due to the breaking down of superficial 

 gummata. The ulcer is covered with a thick, green- 

 ish-brown crust, has a sharply punched-out margin 

 and a circinate or reniform outline. The scar is usu- 

 ally flexible, white, and shining. L. terebrans. 

 Synonym of Lupus perforans. L. tuberculosus. 

 Synonym of L. vulgaris. L. tuberosus, a form of 

 lupus with small nodular prominences. L. tumidus, 

 a variety in which edematous infiltration and connec- 

 tive-tissue overgrowth are present, leading to the for- 

 mation of nodular masses. L. ulcerosus. Synonym 

 . of L. exulcerans. L. vegetans, L. verrucosus, the 

 formation in the lupus process of a warty-looking 

 patch which is liable to become inflamed from time to 

 time. This form occurs chiefly on the hands and 

 feet, and usually in early life. L. vorax. See L. exul- 

 cerans. L. vulgaris. See Lupus. L. vulgaris 

 erythematodes, a variety with lesions resembling 

 those of L. vulgaris and L. erythematosus. It may 

 invade the scalp and the mucous membrane of the 

 mouth, spreading from the face. L. of the Vulva. 

 See Esthiomene. 



Luridity (lu-rid' '-it-e) \luridus ; luror, yellow color] . 

 A pale-yellow color met with in certain cachectic con- 

 ditions ; also in atrophied paralyzed limbs. 



Luschka's Bursa. See L.' 1 s Tonsil. L.'s Cartilage, 

 a nodule of elastic cartilage in the anterior part of the 

 vocal band. L.'s Gland, the coccygeal gland, 

 q. v. A small conglobate body lying near the tip of 

 the coccyx just above the coccygeal attachment of the 

 sphincter ani. Its function is not known. See Gland. 

 L.'s Tonsil, the adenoid tissue that normally exists 

 between the orifices of the Eustachian tubes, analo- 

 gous in structure to the lymphoid constituents of the 

 tonsil. It is also called " Third tonsil" and " Pharyn- 

 geal tonsil.' 1 ' 1 L.'s Villi, minute spheroid, partially 

 vesicular outgrowths from the upper layer of the pia, 

 which eventually become the Pacchionian bodies. 



Luscitas (lus / -it-as) \_luscus, one-eyed]. I. The state 

 of being blind in one eye. 2. Strabismus, especially 

 when caused by paralysis or rheumatism. 



Lusis [lu'-sis) [Xovoig, a washing]. A washing. 



Lussac, Gay, Law of. See Law. 



Lust [ME., /arf, lust]. Carnal desire; sexual appe- 

 tite ; concupiscence. 



Lustful (lust'-ful) [ME., lust, lust]. Libidinous; hav- 

 ing prurient lust. 



Lustgarten, Bacillus of. See Bacteria, Synonymatic 

 Table of. L.'s Method, a method of staining the 

 bacillus of syphilis. See Stains, Table of. 



Lustramentum {lus-tram-en' -turn) \lustrare, to purify]. 

 A purge. 



Lusus (lu'-sus) \luderc,\o play]. A play; a game. 

 L. naturae, a freak of nature ; any abnormal de- 

 parture from that which is natural. 



Lutation {lu-ta' -shun) \Jutum, mud]. The hermetic 

 sealing of a vessel. 



LUTEIN-CELLS. 



Lutein {lu'-te-in) [luteus, yellow]. I. A pigmei 

 obtained from corpora lutea by extraction with chloro 

 form. It occurs in minute rhombic prisms or plate 

 that are pleochromatic and insoluble in water, bu 

 readily soluble in alcohol, ether, and chloroform 

 Lutein is more or less rapidly bleached by the actioi 

 of light. 2. A red 

 lipochrome pigment 

 found by MacMunn 

 in the blood of Ho- 

 lothusia nigra. L.- 

 cells, large cells, 

 containing granules 

 of lutein, character- 

 istic of the metamor- 

 phosed clot of rup- 

 tured Graafian fol- 

 licles, to the margins of which they impart a brigh 

 yellow color, whence the name corpora lutea. The* 

 cells appear to arise from the theca interna. See i! 

 lustration. 



Luteolin (lu' -te-o-li?i) \_luteus, yellow]. A yellow color 

 ing-substance obtained from diphenylamin and diazoxy 

 lenesulphonic acid ; also, a crystalline body, C, H U P 

 found in Reseda lutea. See Pigments, Conspectus oj 



Luteolous (lu-te' -o-lus) \Juteolus, dim. of lutein 

 golden-yellow]. In biology, buff, or yellowish. 



Luteous (lu'-te-us) [/«/«/«, mud]. Clay-colored, mud 

 colored ; saffron, or reddish-yellow. 



Lutescent {lu-tes' -ent) \_lutum, mud]. In biology 

 yellowish, or becoming yellow. 



Luton's Sugar-test. See Tests, Table of. 



Lutose (lu'-tos) \_lutum, mud]. In biology, app'; 

 such organisms as are covered with a substance likemui 



Luxation (luks-a'-shuii). See Dislocation. 



Luxatura [luks-at-u'-rah). See Dislocation. 



Luxus (luks f -us)[\,. , " excess,"]. Excess. L. -breath 

 ing, the breathing of more air than is actually calle 

 for by the needs of the organism. L. -consume ; 

 tion, a term applied by Bidder and Schmidt to till 

 metabolism of certain surplus proteid material, whicl 

 though inside the body, does not form a componei 

 part of any of its tissues, but constitutes a kii 

 ervoir of force upon which the organism can draw. 



Luy"' Body. A lentiform ganglion of amilk-and-i 

 color, which lies in the ideal continuation of the later 

 part of the ganglion of Soemmering. It represents ti 

 boundary between the crusta and the tegmenta; 

 L.'s Transference Method. See Hypnotism. 



Lycaconitin (hkak-on'-it-iii) [/lr/coc, a wolf; acott 

 aconite], C 27 H., 4 N 2 0,. -f H 2 Q. An amorphous alk 

 loid, soluble in water, alcohol, and chloroform, obtain* 

 from Aconitum lycoctonum. In its toxicolog 

 it resembles curare. 



Lycanthrope (li'-han-lhrop) [p\bnoc, wolf; aiflpo'cl 

 man]. A person affected with lycanthropy. 



Lycanthropic {li-kan-throp'-ik) \\\)Koq, wolf; mfipun 

 man]. Pertaining to or affected with lycanthropy. 



Lycanthropy (li-han'-thro-pe) [Ivnoq, a wolf; ditfytrn 

 man]. A form of mania in which a person imagin 

 himself a wild beast. Cf. Zoanthropy. 



Lychnidiate [lik-nid'-e-at) [M<xvoc, a lamp]. In 1 

 ology, luminous, phosphorescent. 



Lycin {li'-sin). See Betaln. 



Lycodes (li-ko'-dlz) \lbnoc, wolf]. A chronic foi 

 tonsillitis. See Lycoides. 



Lycoid {li'-koid) [Ivnoq, wolf; d6oc, like]. R 

 bling a wolf. 



Lycoides {li-koid' -Iz) [Ad/coc, wolf; eWoc, like], 

 term applied to a form of quinsy popularly nttribut' 

 to excess of spermatic fluid in the seminal 

 and its entrance into the blood. 



