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multiset

noun

multiset is spelled M-U-L-T-I-S-E-T: 8 letters. It appears about once in every 40 million words in written English, the 194,306th most frequent word form (wordfreq, 2021 data). As a noun, multiset means “A generalized type of set in which multiple occurrences of an element are permitted” (English Wiktionary, September 2026). The plural of multiset is multisets.

How many letters and syllables are in multiset?

Letters8: M-U-L-T-I-S-E-T
In writingabout once in every 40 million words; the 194,306th most frequent word form
Wrong spellings searchednone measured in search

Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How common is multiset?

Multiset appears about once in every 40 million words in written English, the 194,306th most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

Forms of multiset

  • multisets plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What does multiset mean?

The meanings the English Wiktionary records, quoted as written there (source below).

noun

  1. 1

    A generalized type of set in which multiple occurrences of an element are permitted.

    Two words are anagrams if they are made up of the same multiset of letters.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Multiset in Spanish, French, German and Portuguese

In the sense generalized type of set that may contain multiple occurrences of elements:

LanguageWords
Frenchmultiensemble
GermanMultimenge

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does multiset come from?

Coined by Nicolaas Govert de Bruijn, multi- + set.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What to look up after multiset