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

Medical Dictionary

1

acid

play
adjective ac·id \ˈas-əd\

Medical Definition of acid

  1. 1:  sour, sharp, or biting to the taste

  2. 2a:  of, relating to, or being an acid; also :  having the reactions or characteristics of an acid <an acid solution>bof salts and esters :  derived by partial exchange of replaceable hydrogen <acid sodium carbonate NaHCO3>c:  marked by or resulting from an abnormally high concentration of acid <acid indigestion>—not used technically




2

acid

noun ac·id

Medical Definition of acid

  1. 1:  a sour substance; specifically :  any of various typically water-soluble and sour compounds that in solution are capable of reacting with a base to form a salt, that redden litmus, that have a pH less than 7, and that are hydrogen-containing molecules or ions able to give up a proton to a base or are substances able to accept an unshared pair of electrons from a base

  2. 2:  lsd





Seen and Heard

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

WORD OF THE DAY

February 7, 2016

a slight offense

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

duvet kittly-benders spindrift pince-nez
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ