Share this entry

Share this page

abscisic acid

Line breaks: ab|scis¦ic acid
Pronunciation: /abˈsɪsɪk
 
/

Definition of abscisic acid in English:

noun

[mass noun] Biochemistry
A plant hormone which promotes leaf detachment, induces seed and bud dormancy, and inhibits germination.
Example sentences
  • Of particular interest here is the amphipathic plant hormone abscisic acid.
  • Subsequently, a signal transduction cascade involving at least four plant hormones, ethylene, auxin, abscisic acid, and gibberellic acid, is activated.
  • When conditions are otherwise in favour of producing the submerged type morphology, an exogenous supply of the plant hormone abscisic acid at an optimal concentration induces aerial type characteristics.

Origin

1960s: abscisic from abscisin (the earlier name for the hormone), from abscission.

Definition of abscisic acid in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day Sprachgefühl
Pronunciation: ˈʃprɑːxɡəˌfuːl
noun
intuitive understanding of a language’s natural idiom…