1. able to be counted; having a finite or definite number
Usage: mathematics
2. referring to a noun that can be used with numbers and has both singular and plural forms
Usage: grammar

Examples

• The stars in the sky are countable, though very numerous.
• In mathematics, the set of integers is countable.
• Book is a countable noun because you can say one book, two books.
• Water is not countable, but bottles of water are countable.
• The teacher explained that countable nouns take plural forms.
• Money is uncountable, but coins and bills are countable.
• Students often confuse countable and uncountable nouns in English.