gibberellin

noun
gib·ber·el·lin | \ˌji-bə-ˈre-lən \

Definition of gibberellin 

: any of several growth-regulating plant hormones that promote cell elongation and activity of the cambium, induce parthenocarpy, and stimulate synthesis of nucleic acids and proteins

Examples of gibberellin in a Sentence

Recent Examples on the Web

The seed has two hormones: abscisic acid (ABA), which sends the signal to stay dormant, and gibberellin (GA), which initiates germination. Jason Daley, Smithsonian, "Seeds May Use Tiny “Brains” to Decide When to Germinate," 9 June 2017 The seed has two hormones: abscisic acid (ABA), which sends the signal to stay dormant, and gibberellin (GA), which initiates germination. Jason Daley, Smithsonian, "Seeds Use Tiny “Brains” to Decide When to Germinate," 9 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'gibberellin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of gibberellin

1939, in the meaning defined above

History and Etymology for gibberellin

New Latin Gibberella fujikoroi, fungus from which it was first isolated

Keep scrolling for more

Learn More about gibberellin

Share gibberellin

Statistics for gibberellin

Look-up Popularity

Time Traveler for gibberellin

The first known use of gibberellin was in 1939

See more words from the same year

More from Merriam-Webster on gibberellin

Britannica.com: Encyclopedia article about gibberellin

Comments on gibberellin

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

WORD OF THE DAY

one that holds something together

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!