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

subatomic

play
adjective sub·atom·ic \-ə-ˈtä-mik\

Simple Definition of subatomic

  • : smaller than an atom

  • : of or relating to the inside of an atom

Source: Merriam-Webster's Learner's Dictionary

Full Definition of subatomic

  1. 1 :  of or relating to the inside of the atom

  2. 2 :  of, relating to, or being particles smaller than atoms

1903

First Known Use of subatomic

1903


Medical Dictionary

subatomic

play
adjective sub·atom·ic \ˌsəb-ə-ˈtäm-ik\

Medical Definition of subatomic

  1. 1:  of or relating to the inside of the atom

  2. 2:  of, relating to, or being particles smaller than atoms




Seen and Heard

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

WORD OF THE DAY

a very small amount

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

acommadate acommodate accomodate accommodate
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