The levorotatory isomer of methamphetamine, a sympathomimetic vasoconstrictor used in some nasal decongestants.

A particular antihistamine drug, of chemical formula C26H29FN2O2, used for allergic conjunctivitis.

(pharmacology) A third-generation nonsedative antihistamine.

(chemistry) The inactive isomer of the opioid analgesic dextromoramide.

(pharmacology) A particular local anesthetic drug.

(organic chemistry) A bridged, polyhydroxy heterocycle, 6,8-dioxabicyclo[3.2.1]octane-2,3,4-triol or 1,6-anhydro-beta-D-glucose, formed by controlled pyrolysis of various carbohydrates

(organic chemistry) A bridged, unsaturated heterocyclic ketone, 6,8-dioxabicyclo[3.2.1]oct-2-en-4-one, formed from levoglucosan by further loss of two molecules of water

(chemistry) Levorotatory.

(archaic) levulose (D-fructose), the left-rotating form of fructose

levorotation