Definition of levorotatory in English:

levorotatory

(British laevorotatory)

Pronunciation /ˌlēvəˈrōdəˌtôrē/ /ˌlivəˈroʊdəˌtɔri/

adjective

Chemistry
  • (of a compound) having the property of rotating the plane of a polarized light ray to the left, i.e., counterclockwise facing the oncoming radiation.

    The opposite of dextrorotatory

    ‘The chemical structure of the natural form of ephedrine is levorotatory, while the synthetic ephedrine is a racemic mixture.’
    • ‘Morphine is an amphoteric pentacyclic alkaloid that exists naturally in its levorotatory form as columnar colorless prisms.’
    • ‘Hence this appeal to gastropodologists, if such a term exists, to come to the rescue and explain the unique (laevorotatory) development of the humble periwinkle.’