cardinal number

noun

Definition of cardinal number 

1 : a number (such as 1, 5, 15) that is used in simple counting and that indicates how many elements there are in an assemblage — see Table of Numbers

2 : the property that a mathematical set has in common with all sets that can be put in one-to-one correspondence with it

First Known Use of cardinal number

1591, in the meaning defined at sense 1

Keep scrolling for more

Learn More about cardinal number

Share cardinal number

Statistics for cardinal number

Look-up Popularity

Time Traveler for cardinal number

The first known use of cardinal number was in 1591

See more words from the same year

Keep scrolling for more

More Definitions for cardinal number

cardinal number

noun

English Language Learners Definition of cardinal number

: a number (such as 1, 2, or 3) that is used in simple counting and shows quantity

cardinal number

noun

Kids Definition of cardinal number

: a number (as 1, 5, 22) that is used in simple counting and answers the question “how many?”

Keep scrolling for more

More from Merriam-Webster on cardinal number

Spanish Central: Translation of cardinal number

Nglish: Translation of cardinal number for Spanish Speakers

Britannica.com: Encyclopedia article about cardinal number

Comments on cardinal number

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

WORD OF THE DAY

to enclose within walls

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

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!