Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

oosphere

noun
oo·​sphere | \ -ˌsfi(ə)r\

Definition of oosphere

: an unfertilized egg : a female gamete that is fully mature and ready for fertilization : ovum sense 1 a —used especially of lower plants

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!

History and Etymology for oosphere

International Scientific Vocabulary o- + sphere

Keep scrolling for more

Learn More about oosphere

Dictionary Entries near oosphere

oosome

oosorption

oosperm

oosphere

Oospora

oospore

oosporiferous

Statistics for oosphere

Look-up Popularity

Comments on oosphere

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

Show Comments  Hide Comments 

WORD OF THE DAY

propitious

Listen to the pronounciation of propitious

likely to have or produce good results

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
True or False

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

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!

Words at Play
Ask the Editors
Word Games