Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

abscisic acid

play
noun ab·scis·ic acid \ˌab-ˈsi-zik-, -sik-\

Definition of abscisic acid

  1. :  a plant hormone C15H20O4 that is a sesquiterpene widespread in nature and that typically promotes leaf abscission and dormancy and has an inhibitory effect on cell elongation



Origin and Etymology of abscisic acid

abscision (variant of abscission) + -ic


First Known Use: 1968


Learn More about abscisic acid


Seen and Heard

What made you want to look up abscisic acid? Please tell us where you read or heard it (including the quote, if possible).