Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

opto-

combining form

Definition of opto-

  1. 1 :  vision <optometry>

  2. 2 :  optic and <optoelectronics>



Origin and Etymology of opto-

Greek optos, verbal of opsesthai — more at optic


Learn More about opto-

  1. Medical Dictionary: Definition of opto-


Seen and Heard

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

WORD OF THE DAY

the lowest point

Get Word of the Day daily email!