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

I/O

abbreviation

Definition of I/O

  1. input/output




Seen and Heard

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

WORD OF THE DAY

to dishevel or rumple

Get Word of the Day daily email!