| levonordefrin | Alpha-(1-Aminoethyl)-3,4-dihydroxybenzyl alcohol;used as a nasal decongestant and as a vasoconstrictor given with infiltration anaesthetics. (05 Mar 2000) |
|---|---|
| levonorgestrel | <chemical> A progestational hormone with actions similar to those of progesterone and about twice as potent as its racaemic or (+-)-isomer (norgestrel). It is used for contraception, control of menstrual disorders, and treatment of endometriosis. Pharmacological action: contraceptive agents, female, contraceptives, oral, synthetic, progestational hormones, synthetic. Chemical name: 18,19-Dinorpregn-4-en-20-yn-3-one, 13-ethyl-17-hydroxy-, (17alpha)-(-)- (12 Dec 1998) |
| levophacetoperane | Alpha-Phenyl-2-piperidinemethanol acetate;an antidepressant with anorexigenic properties. (05 Mar 2000) |
| levophobia | <psychology> Fear of objects to the left. (05 Mar 2000) |
| levopropoxyphene napsylate | Alpha-4-(Dimethylamino)-3-methyl-1,2-diphenyl-2-butanol propionate 2-naphthalenesulfonate;an antitussive. (05 Mar 2000) |
| levorotation | 1. A turning or twisting to the left; in particular, the counterclockwise twist given the plane of plane-polarised light by solutions of certain optically active substances. Compare: dextrorotation. Synonym: sinistrotorsion. Origin: Levo-+ L. Roto, to turn (05 Mar 2000) |
| levorotatory | <chemistry> A chiral molecule which rotates plane-polarized light to the left. (09 Jan 1998) |
| levorotatory isomer | A stereoisomer that rotates the plane of polarized light counterclockwise. (09 Oct 1997) |
| levorphanol | <chemical> A narcotic analgesic that may be habit-forming. It is nearly as effective orally as by injection. Pharmacological action: analgesics, opioid, narcotics. Chemical name: Morphinan-3-ol, 17-methyl- (12 Dec 1998) |
| levorphanol tartrate | L-3-Hydroxy-N-methylmorphinan tartrate dihydrate;an analgesic similar in action to morphine. (05 Mar 2000) |
| levothyroxine | <chemical> Levo isomer of the thyroid hormone thyroxine. It is used for replacement therapy in reduced or absent thyroid function. Chemical name: L-Tyrosine, O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo- (12 Dec 1998) |
| levotorsion | Synonym: sinistrotorsion. 2. Rotation of the upper pole of the cornea of one or both eyes to the left. Synonym: levoclination. Synonym: levocycleduction. Origin: Levo-+ L. Torsio, a twisting (05 Mar 2000) |
| levoversion | 1. Version toward the left. 2. Conjugate turning of both eyes to the left. Origin: Levo-+ L. Verto, pp. Versus, to turn (05 Mar 2000) |
| Levret | Andre, French obstetrician, 1703-1780. See: Levret's forceps, Mauriceau-Levret manoeuvre. (05 Mar 2000) |
| Levret's forceps | A modification of the Chamberlen forceps, curved to correspond to the curve of the parturient passage. (05 Mar 2000) |