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

Medical Dictionary

1

substitute

play
noun sub·sti·tute \ˈsəb-stə-ˌt(y)üt\

Medical Definition of substitute

  1. :  a person or thing that takes the place or function of another <father and mother substitutes>

substitute adjective



2

substitute

transitive verb sub·sti·tute

Medical Definition of substitute

substituted; substituting

  1. :  to put or use in the place of another: asa:  to introduce (an atom or group) as a substituentb:  to alter (as a compound) by introduction of a substituent





Seen and Heard

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

WORD OF THE DAY

immature or lacking adult sophistication

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

maudlin prompt angry oily
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ