levorotary

/ˌliːvəˈroʊtəri/
adjective
  1. Describing a substance that rotates the plane of polarized light to the left (counterclockwise).
    • Many natural amino acids are levorotary, which affects how they interact with light.
    • In chemistry class, we tested a levorotary sugar solution and observed the light bending to the left.
    • The label on the bottle indicated that the compound was levorotary, not dextrorotary.
Antonyms