noun · 4 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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US:/fɪlˈtɹeɪʃən/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -eɪʃən
CMU ARPABET:F IH0 L T R EY1 SH AH0 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
The act or process of filtering; the mechanical separation of a liquid from the undissolved particles floating in it.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
A totally ordered collection of subsets.
Definition source: English Wiktionary via Wiktextract
Etymology tree Proto-Indo-European *pel-der. Proto-Germanic *felląder. Proto-West Germanic *feltbor. Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Italic *-trom Latin -trum Latin filtrumlbor. French filtre Proto-Italic *-āzi ▲ Latin -ereinflu. Latin -āre Old French -ier Middle French -er French -er French filtrer Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin -ātiōlbor. Old French -ation Middle French -ation French -ation French filtrationbor. English filtration Borrowed from French filtration.
Across languages
Translations
32 source translations are retained for this English entry.