tricyclic

adjective
tri·​cy·​clic | \ (ˌ)trī-ˈsī-klik How to pronounce tricyclic (audio) , -ˈsi-klik\

Definition of tricyclic

 (Entry 1 of 2)

: being a chemical with three usually fused rings in the molecular structure and especially a tricyclic antidepressant tricyclic compounds a tricyclic antidepressant drug

tricyclic

noun

Definition of tricyclic (Entry 2 of 2)

First Known Use of tricyclic

Adjective

1891, in the meaning defined above

Noun

1973, in the meaning defined above

History and Etymology for tricyclic

Adjective

tri- + cyclic

Keep scrolling for more

Learn More about tricyclic

Statistics for tricyclic

Time Traveler for tricyclic

The first known use of tricyclic was in 1891

See more words from the same year

Keep scrolling for more

More Definitions for tricyclic

tricyclic

adjective
tri·​cy·​clic | \ (ˈ)trī-ˈsī-klik, -ˈsik-lik How to pronounce tricyclic (audio) \

Medical Definition of tricyclic

 (Entry 1 of 2)

: being a chemical with three usually fused rings in the molecular structure and especially a tricyclic antidepressant

tricyclic

noun

Medical Definition of tricyclic (Entry 2 of 2)

Comments on tricyclic

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

WORD OF THE DAY

to engage in dissolute behavior

Get Word of the Day daily email!

Test Your Vocabulary

Pass the Little Ribbons: A Pasta Word Quiz

  • rotelle pasta
  • Match the pasta to its meaning in English: Rotelle
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

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!