Fiv

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Initialism of feline immunodeficiency virus. abbreviation, alt-of, initialism, uncountable
  2. 2
    Abbreviation of factor IV (clotting factor IV). abbreviation, alt-of, uncountable

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