Bonellia

noun
Bo·​nel·​lia | \bōˈnelēə, bə-\

Definition of Bonellia 

: a genus of marine worms (group Echiuroidea) that exhibit marked dimorphism and size disparity between the sexes, the male living parasitically in the nephridium of the female and that have what appears to be a unique mechanism of sex determination, the indifferent larva becoming a male if it settles on the proboscis of a mature female and becoming a female if it develops independently on the sea bottom

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 Bonellia

New Latin, from Francesco A. Bonelli †1830 Italian naturalist + New Latin -ia

Keep scrolling for more

Learn More about Bonellia

Dictionary Entries near Bonellia

bonehead

bone-in

bone lace

Bonellia

bone marrow

bonemeal

bone oil

Statistics for Bonellia

Look-up Popularity

Comments on Bonellia

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

WORD OF THE DAY

noxious or harmful

Get Word of the Day daily email!

Test Your Vocabulary

A Thanksgiving Word Quiz

  • a-traditional-thanksgiving-dinner
  • November comes from a word for which of the following numbers?
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!