dom·​i·​na·​tor -ˌnāt-ər How to pronounce dominator (audio)
: a brightness receptor in the retina of the eye that is supposedly a group of cones linked to the terminals of a single nerve fiber

Dictionary Entries Near dominator

Cite this Entry

“Dominator.” Medical Dictionary, Merriam-Webster, Accessed 7 Feb. 2023.

More from Merriam-Webster on dominator

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

The Great British Vocabulary Quiz

  • union jack speech bubble
  • Named after Sir Robert Peel, what are British police called?
Spell It

Hear a word and type it out. How many can you get right?

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?