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Definition of annihilator

annihilator

/əˈnaɪ.ə.leɪ.tɚ/
an · ni · hi · la · tor
Plural:annihilators
•
Adjective:annihilative
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annihilator Lexical Profile

annihilator Game Scores & Validity

• noun

1

A person or thing that destroys, obliterates, or defeats something completely.

Example

"The invasive beetle acted as a ruthless annihilator of the region's native ash trees."

2

In abstract algebra and functional analysis, the set of all elements or linear functionals in a mathematical structure that map every member of a given subset to zero.

Example

"In the lecture on ring theory, the professor proved that the annihilator of any two-sided ideal forms an ideal itself."

Synonyms
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Antonyms
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• Rhymes for annihilator

• Nearby Words

annie
annihilate
annihilation
annihilator
anniversary
annona
annotate

Word Origin & Etymology

Formed in English from the verb 'annihilate' plus the agent suffix '-or', ultimately deriving from Late Latin 'annihilatus', from 'ad-' (to) and 'nihil' (nothing).

Cite this Entry

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