Etymology

infimum

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Today it means: (of a subset) the greatest element of the containing set that is smaller than or equal to all elements of the subset. The infimum may or may not be a member of the subset. Full definition →

Latin infimum
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The story

  1. Latin · borrowed frominfimum“lowest part”
  2. English todayinfimum

Borrowed from Latin infimum (“lowest part”), from infimus (“lowest”).

Etymology from Wiktionary, CC BY-SA 4.0.