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Definition of lookup

lookup

/ˈlʊk.ʌp/
look · up
Plural:lookups
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lookup Lexical Profile

lookup Game Scores & Validity

• noun

1

The act or process of searching for and retrieving specific information from a reference source, database, table, or index, especially in computing.

Example

"Indexing the primary key column will significantly speed up each database lookup."

Synonyms
View all synonyms for lookup

Word Nuance & Usage

The closed compound "lookup" is used as a noun or noun adjunct (as in "a lookup table"), whereas the two-word phrasal verb "look up" is used for the action (as in "look up the word in a dictionary").

• Rhymes for lookup

• Nearby Words

lookit
lookout
lookover
lookup
loom
loon
loonie

Cite this Entry

Wordmom. (2026). Definition of Lookup. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/lookup
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