frustum

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English[edit]

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Etymology[edit]

Latin frustum (morsel).

Pronunciation[edit]

  • (file)

Noun[edit]

frustum (plural frustums or frusta)

  1. A cone or pyramid whose tip has been truncated by a plane parallel to its base.
  2. A region of a sphere delimited by two parallel planes.

Synonyms[edit]

  • (area of a sphere): zone

Usage notes[edit]

The spelling frustrum is erroneous,[1] and is by incorrect analogy with frustrate, also of Latin origin.

Translations[edit]

References[edit]

  1. ^ Oxford English Dictionary, 1884-1928, and First Supplement, 1933

Latin[edit]

Etymology[edit]

From Proto-Indo-European *bhruhs-to, from *bhreu (to break up, cut).

Pronunciation[edit]

Noun[edit]

frustum n (genitive frustī); second declension

  1. a piece, bit; crumb, morsel, scrap of food

Inflection[edit]

Second declension neuter.

Number Singular Plural
nominative frustum frusta
genitive frustī frustōrum
dative frustō frustīs
accusative frustum frusta
ablative frustō frustīs
vocative frustum frusta

Synonyms[edit]

Descendants[edit]