LUBRICATION 



707 



LUMBRICOID 



mixing with animal or vegetable oils, and it is therefore 

 necessary that they should be thoroughly deodorized, 

 decolorized, and deprived "I the blue fluorescence, or 

 "bloom," characteristic of petroleum distillates that 

 contain paraffin. Heavier lubricating oils are called 

 "spindle" oils and "cylinder" oils. The most im- 

 portant characters to be possessed by these oils are high 

 fire-test, low cold-test, and a high degree of viscosity. 



Lubrication (lu-brik-a f -shun) [lubricare, to make 

 smooth]. The process o! making smooth or slippery 

 by the application of a lubricant. 



Lubricity (lu-bris / -it-e) [lubricare, to make slipper}]. 

 A synonym of lasciviousness ; slipperiness. 



Lubricous (/«' '-brik-us) [lubricus, lubricare, to make 

 smooth]. Smooth, slippery. 



Luca, Horizontal Plane of. See Plane. 



Lucent (lu'-sent) [lucere, to shine]. Bright, shining. 



Lucernal (lu-ser'-nal) [lucerna, a lamp]. Pertaining 

 to lamp-light. 



Lucet, Bacillus of. See Bacteria, Synonymatic Table 



°f- 

 Lucid (Ju' -si J} [lucidus, clear]. Clear, shining, unob- 



scured. In biology, having a smooth, shining surface. 

 L. Interval, the transitory return of normal mental 

 action and sanity in certain forms and cases of in- 

 sanity. 



Lucidity (lu-siJ'-it-e) [lucidus, clear]. Clearness; 

 lucid interval. 



Lucidum (lu'-sid-u»i) [lucidus, clear]. Clear. L., 

 Septum. See Sept inn . 



Luciferase (lu-sif -er-dz) [lucifer, light-bringing]. The 

 name applied by Dubois to one of the two diastatic 

 substances which become phosphorescent when mixed 

 in the presence of water, and which are found in the 

 mollusc, Pholas dactylifera, the mouth of which is 

 luminous. 



Luciferin (lu-sif ~ f -er-iri) [lux, lucis, light ; ferre, to 

 bear]. A crystalline body obtained from the light-pro- 

 ducing organs of certain animals. 



Lucifer-match Disease or L. -match Maker's Dis- 

 ease. Necrosis of the jaw due to phosphorus-poi- 

 soning. 



Luciform (lu'-sif-orm) [lux, light ; forma, form]. 

 Resembling light. 



Lucifugal (lu-sif '-u-gal) [lux, light; fngere, to flee]. 

 Fleeing from or avoiding light. 



Lucifugous (lu-sif -u-gus) [lux, light ; fugere, to 

 flee]. In biology, applied to organisms that avoid 

 light. 



Lucilia (lu-siV -e-ah) [L.]. A genus of dipterous in- 

 sects, the larvae of which act as facultative parasites, 

 producing various forms of myiasis, (/. v. See Para- 

 sites (Animal), Table of. 



Lucilin (lu'-sil-in) [lux, lucis, light]. A commercial 

 mixture of lamp-petroleum and brown coal-oil. 



Lucina (lu-si'-nah) [lux, light]. The goddess of 

 childbirth. L. sine coitu. Parthenogenesis, q. v. 



Lucomania (lu-ko-ma 1 '-ne-ah) [M>xoq, wolf; fiavia, 

 mania]. Same as Lycanthropy, q.v. 



Lucuma (lu-ku'-mah) [nat. Peruvian]. A genus of trop- 

 ical American sapotaceous trees. L. caimito, of S. 

 America (called abi and abiaba) is strongly tonic and 

 antiperiodic, and is useful in diarrhea ; other species 

 have similar qualities. I nof. 



Lucumin (lu-ku'-min) [lucuma"]. A bitter principle 

 obtained from Lucuma caimito. It is recommended 

 for use in diarrheas and in intermittent fevers. Dose 

 gr. j-viij. Unof. 



Ludwig's Angina. A cellulitis of the neck, usually a 

 secondary inflammation in the specific fevers, particu- 

 larly diphtheria and scarlet fever. It may, however, 

 occur idiopathically or result from trauma. The 



swelling is marked in the submaxillary region. It is also 

 called Loiiii's Angina. See Angina, and Diseases, 

 Table of. L.'s Angle (Angulu u fovici , the angle 

 that exists in some cases of emphysema between the 

 manubrium and the body of tin- sternum. See An 

 L.'s Ganglion. See Ganglia, Table of. 



Liicke's Test. See Test . Table of. 



Lues (lit'-cs) [I-]- Formerly a pestilential disease; at 

 present used as an euphemism lor syphilis. L. deifica, 

 L. divina, epilepsy. 



Luetic [In et'-ifc) [lues, a plague]. Affected with or re- 

 lating to lues ; syphilitic. 



Luffa (Inf'-ali) [Arab.]. A genus of cucurbitaceous 

 plants. L. acutangula, the strainer vine, of India, 

 having an edible fruit, a purgative and emetic root, and 

 oil-bearing seeds. L. amara has similar uses. L. 

 cylindrica, the " wash -rag," "towel gourd," >.r 

 " vegetable sponge," bears a fruit which when dry 

 contains a sponge-like network of fibers. This i- some- 

 times used as a substitute for a sponge or towel. L. 

 purgans, of S. America, affords a strongly purgative 

 resin. Unof. 



Lugol's Caustic. A solution of iodin and potassium 

 iodid, of each one part, in water two parts. L.'s So- 

 lution. See lodin. 



Lumbaginous (lum-baj' -in-us) [lumbus, loin]. Affected 

 with, or pertaining to, lumbago. 



L,umbago (lum-ba'-^o) [lumbus, the loin]. I'ain in the 

 structures about the loins, whether neuralgic or rheu- 

 matic. 



Lumbar (lum'-bar) [lumbus, the loin]. Pertaining to 

 the loins, especially to the region about the loins. L. 

 Abscess, an abscess in the lumbar region. L. 

 Arteries. See Arteries, Table of. L. Colotomy. 

 See Lumbo-colotomv. L. Myalgia, lumbago. L. 

 Nephrectomy, nephrectomy through an incision in 

 the lumbar region. L. Nephrotomy, nephrotomy 

 through an incision in the lumbar region. L. Nerves. 

 See Alerves, Table of. L. Reflex. See Reflexes, 

 Table of. L. Region. See Abdomen. 



Lumben (lum'ben) [lumbus, loins]. Belonging to the 

 loin in itself. 



Lumberman's Itch. Same as Army Itch. 



Lumbifragium (lum-bif-ra' je-um) [lumbus, loin; 

 frangere, to break]. Lumbar hernia. 



Lumbiplex (lum'-be-pleks). The lumbar plexus. 



Lumbiplexal (lum-be-pleks' ' -al) [lumbus, loin ; plexus, 

 net]. Pertaining to the lumbiplex. 



Lumbo-abdominal (lum'-bo-ab-dom'-in-al) [lumbus, 

 loin; abdomen, abdomen]. Pertaining to the loin and 

 the abdomen. 



Lumbocolotomy ilum' -bo-ko-lot'-o-mc) [lumbus,\o'm; 

 ko'/ov, colon; roui/, a cutting]. Colotomy performed 

 in the lumbar region. 



Lumbo-costal (lum-bo-kos'-tal) [lumbus, loin ; costa, 

 rib]. Pertaining to the loins and the ribs. 



Lumbodorsal (lum-bo-dor'-sal) [lumbus, \6\x\ ; dorsum, 

 back]. Pertaining to the lumbar and dorsal regions. 



Lumbodynia (lum-bo-din' '-e ah) [lumbus, loin ; bfiivi/, 

 pain]. Same as Lumbago. 



Lumbo-inguinal (lum-bo-in 1 ' -gwin-al") [lumbus, loin ; 

 inguen, groin]. Pertaining to the lumbar and in- 

 guinal regions. 



Lumbosacral (lum-bo-sa'-kral) [lumbus. loin ; acrum, 

 sacrum]. Pertaining to the lumbar and sacral regions. 



Lumbricales (lum-brik-a'-lez). See Muscles, Table of . 



Lumbricide ilum'-bris-id) [lumbricus, earth-worm; 

 ccedere, to kill]. A drug fatal to lumbricoid worms. 



Lumbriciform (lum-bris / -if-orm). See Lumbricoid. 



Lumbricoid (lum'-brilc-oid ) [lumbricus, earth-worm; 

 eldog, likeness]. Pertaining to, or resembling, a 

 lumbricus. 



