DI

abbreviation

Definition of DI

drill instructor

di-

combining form

Definition of di-

1 : twice : twofold : double
  • dichromatic
2 : containing two atoms, radicals, or groups
  • dioxide

Origin and Etymology of di-

Latin, from Greek; akin to Old English twi-


Medical Dictionary

DI

abbreviation

medical Definition of DI

diabetes insipidus

Learn More about di

  1. Spanish Central: Translation of DI Britannica.com: Encyclopedia article about DI


Seen and Heard

What made you want to look up DI? 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

the quality or fact of being simultaneous

Get Word of the Day daily email!

Test Your Vocabulary

What's That From? A Word Origin Quiz

  • turris-babel-by-athanasius-kircher
  • What language gave the word robot to English?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Citation

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!