Standard Lemma guide

impactor

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • General-American: /ɪmˈpæktɚ/
  • Received-Pronunciation: /ɪmˈpæktə/
  • rhymes with -æktə(ɹ)

1

noun

Meaning 1

Any of several machines or devices in which a part impacts on another, or on a material.

Definition source: English Wiktionary via Wiktextract

Examples

  • cascade impactor

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

An object which impacts another.

Definition source: English Wiktionary via Wiktextract

Examples

  • Chicxulub impactor

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Borrowed from New Latin impāctor, from impingō + -tor.