“Avogadro's”

We have one entry that includes the term Avogadro's.

Avogadro's number

noun

: the number 6.022 × 1023 indicating the number of atoms or molecules in a mole of any substance

See the full definition

Word of the Day

Listen to the pronunciation of bromide

See Definitions and Examples »

Test Your Vocabulary

Challenging Standardized Test Words

  • high school student holding a pencil leaning over a sat test
  • Despite the cacophony, the student tried to study.
Spell It

Hear a word and type it out. How many can you get right?

TAKE THE QUIZ
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.

Pick the best words!

PLAY
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
sandwich-happy-face
Synonym Sandwich Quiz Connect two unrelated words by picking a word syn...
See All