countable
Học thuậtThân thiện
Definition
- Adjective:
- Capable of being counted: A "countable" noun or object is one that can be enumerated as individual, separate units. It can be used with numbers (e.g., one, two, three) and quantifiers like "many" or "few."
- Denoting a set whose elements can be put into one-to-one correspondence with the natural numbers: In mathematics, a "countable" set is an infinite set whose elements can be listed in a sequence, meaning it has the same size as the set of natural numbers.
Usage Examples
- Adjective:
- "Apple" is a countable noun; you can say "one apple," "two apples." (The noun "apple" refers to items that can be individually counted.)
- The assets were countable and listed in the inventory. (The assets were items that could be enumerated and recorded.)
- In set theory, the set of all integers is a countable infinite set. (The collection of all whole numbers can be matched one-to-one with the natural numbers.)
Advanced Usage
"Countably infinite": An infinite set that is countable.
- The set of rational numbers is countably infinite. (The collection of all fractions can be listed in a sequence, despite being infinite.)
"Countable noun" (Grammar): A noun that has both singular and plural forms and can be modified by numbers.
- Remember to add an 's' to make countable nouns plural. (For nouns like "book" or "chair," you form the plural by adding "s.")
Variants and Related Words
- Count (verb): To determine the total number of units.
- Please count the number of chairs in the room.
- Countability (noun): The quality or state of being countable.
- The countability of a noun affects which articles and quantifiers you use.
- Uncountable (adjective): Not capable of being counted; usually referring to mass nouns or abstract concepts.
- "Water" is typically an uncountable noun.
Synonyms
- Enumerable: Capable of being counted or listed.
- Numberable: Able to be numbered or counted.
Antonyms
- Uncountable: Not able to be counted.
- Innumerable: Too many to be counted; countless.
Adjective
- that can be counted
- countable sins
- numerable assets