P100

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    P100; Ellipsis of NIOSH P100.; P100 standard uncountable
  2. 2
    P100; Ellipsis of NIOSH P100.; P100 filter countable

Etymology

From Initialism of oil-Proof with 100% filtration efficiency in NIOSH air filtration ratings.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.