Bacillariophyceae

plural noun
Bac·​il·​lar·​i·​o·​phy·​ce·​ae | \ -əˈfīsēˌē, -əˈfis- \

Definition of Bacillariophyceae

: a class of yellow-green algae (division Chrysophyta) comprising the diatoms

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of Bacillariophyceae

1931, in the meaning defined above

History and Etymology for Bacillariophyceae

New Latin, from Bacillaria + -o- + -phyceae

Keep scrolling for more

Learn More about Bacillariophyceae

Time Traveler for Bacillariophyceae

Time Traveler

The first known use of Bacillariophyceae was in 1931

See more words from the same year

Statistics for Bacillariophyceae

Cite this Entry

“Bacillariophyceae.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Bacillariophyceae. Accessed 25 Jan. 2021.

Comments on Bacillariophyceae

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

WORD OF THE DAY

Test Your Vocabulary

Slippery Words Quiz—Changing with the Times

  • ducreux self portrait yawning
  • What is an earlier meaning of nice?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!