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单词 abscisic acid
释义

abscisic acid

noun

ab·​scis·​ic acid ˌab-ˈsi-zik- How to pronounce abscisic acid (audio)
-sik-
: 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

Example Sentences

Recent Examples on the Web The researchers compared how different plants within this family responded to the release of abscisic acid. Ashley Strickland, CNN, 2 May 2022 The older trees had lower levels of a growth hormone called indole-3-acetic acid and higher levels of a growth-inhibiting hormone called abscisic acid. Erin Malsbury, Science | AAAS, 13 Jan. 2020 The seed has two hormones: abscisic acid (ABA), which sends the signal to stay dormant, and gibberellin (GA), which initiates germination. Jason Daley, Smithsonian, 9 June 2017

Word History

Etymology

abscision (variant of abscission) + -ic entry 1

First Known Use

1968, in the meaning defined above

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更新时间:2025/1/24 11:33:30