Dictionary

ortho

adjective or·tho \ˈr-(ˌ)thō\

Definition of ORTHO

ADVERTISEMENT

First Known Use of ORTHO

1904

Browse

8 ENTRIES FOUND:
Next Word in the Dictionary: orthoarsenatePrevious Word in the Dictionary: orthiteAll Words Near: ortho
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears