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Definition of proliferation
proliferation
/prəˌlɪf.əˈreɪ.ʃən/
pro · lif · er · a · tion
Plural:proliferations
•Adjective:proliferative
proliferation Lexical Profile
CEFR
C1
Grade
11
Tier
2
Usage
Top 10k
Syllables
5
proliferation Game Scores & Validity
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Wordle Guess
• noun
1
A rapid and substantial increase in the number, amount, or spread of something.
Example
"The past decade has seen a rapid proliferation of streaming services across the entertainment industry."
2
The rapid reproduction of a cell, part, or organism through repeated division or budding.
Example
"Researchers tested several compounds designed to inhibit the abnormal proliferation of tumor cells."
Synonyms
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Word Origin & Etymology
Borrowed in the mid-19th century from French prolifération, formed from Medieval Latin prolifer ('bearing offspring'), a compound of Latin proles ('offspring') and ferre ('to bear').
Cite this Entry
Wordmom. (2026). Definition of Proliferation. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/proliferation