SINCE 1828

An Encyclopædia Britannica Company

gibberellic acid

noun gib·ber·el·lic acid \ ˌji-bə-ˈre-lik- \

Definition of gibberellic acid

: a crystalline acid C₁₉H₂₂O₆ that is a gibberellin used especially in the malting of barley

First Known Use of gibberellic acid

1954

in the meaning defined above

See Words from the same year

NEW! Time Traveler

Learn More about gibberellic acid

Britannica.com: Encyclopedia article about gibberellic acid

Seen and Heard

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

show

WORD OF THE DAY

cathexis

play

investment of mental or emotional energy

Words at Play

alt-5ade0f1ca7a0c

'Complement' vs. 'Compliment'

The distinction is clear (now).

Words from Letters in the Greek Alphabet

When English borrows from another alphabet

alt-5ada140ed3e28

'Preventive' or 'Preventative'?

alt-5ad8fc71357ed

Words We're Watching: 'Bluebeard,' the Verb

No, it's not a coiffure trend

Ask the Editors

2017 Word of the Year: Behind the Scenes

How we chose 'feminism'

video-title-words-of-the-year-1066

Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

video-literally

Literally

How to use a word that (literally) drives some people nuts.

video-his-or-her

Is Singular 'They' a Better Choice?

The awkward case of 'his or her'

Word Games

Odd Habits and Quirks Quiz

Test your knowledge of strange human behaviors.

Take the quiz

cats-on-impossible-timber

More Confusing Words—Quiz

How many of these commonly confused words do you know?

Take the quiz

Name That Thing

Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz

Word Winder's CrossWinder

Word Winder's CrossWinder

A game of winding words.

Play the game