ont-

combining form
variants: or onto-

Definition of ont-

1 :being :existence
  • ontology
2 :organism
  • ontogeny

Origin and Etymology of ont-

New Latin, from Late Greek, from Greek ont-, ōn, present participle of einai to be — more at is


-ont

noun combining form

Definition of -ont

:cell :organism
  • diplont

Origin and Etymology of -ont

Greek ont-, ōn, present participle


ONT- Defined for Kids

Ont.

abbreviation

Definition of Ont. for Students

Ontario

Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

a ram's-horn trumpet used in Judaism

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
Spell It

Can you spell these 10 commonly misspelled words?

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!