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Definition of spillover

spillover

/ˈspɪlˌoʊvər/
spill · o · ver

Plural:spillovers
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spillover Lexical Profile

spillover Game Scores & Validity

• noun

1

A secondary, indirect, or unintended consequence of an economic, political, or social activity that affects people or areas not directly involved.

Example

"Economists studied the positive spillover of technological innovation on surrounding manufacturing sectors."


2

An instance of something overflowing or spreading into another area, or an amount that exceeds the capacity of its container or space.

Example

"The auxiliary parking lot was opened to accommodate the spillover from the main stadium."


3

The transmission of a pathogen from its natural reservoir host species to a novel host population.

Example

"Habitat fragmentation increases the risk of viral spillover from wildlife to domestic livestock."

Synonyms
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• adjective

1

Resulting from or relating to an activity, condition, or event that spreads beyond its original bounds to affect other areas.

Example

"Local restaurants enjoyed the spillover benefits of the annual music festival held in the neighboring park."

Synonyms
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Word Nuance & Usage

The noun or adjective is written as a single solid word 'spillover' (or occasionally hyphenated as 'spill-over'), whereas the phrasal verb is always written as two separate words, 'spill over'.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


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