heterocyst

noun
het·ero·cyst | \ˈhe-tə-rō-ˌsist \

Definition of heterocyst 

: a large transparent thick-walled cell that is found in the filaments of some cyanobacteria and is the site of nitrogen fixation

Other Words from heterocyst

heterocystous \ˌhe-tə-rō-ˈsi-stəs \ adjective

First Known Use of heterocyst

1872, in the meaning defined above

Keep scrolling for more

Learn More about heterocyst

Share heterocyst

Statistics for heterocyst

Look-up Popularity

Time Traveler for heterocyst

The first known use of heterocyst was in 1872

See more words from the same year

More from Merriam-Webster on heterocyst

Britannica.com: Encyclopedia article about heterocyst

Comments on heterocyst

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

WORD OF THE DAY

a generally accepted meaning of a word

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble-tiles-that-read-scrabble-quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

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!