• Cirrus

    Pronunciation

    • IPA: /ˈsɪɹəs/
    • Rhymes: -ɪrÉ™s

    Origin

    From Latin cirrus ("curl").

    Full definition of cirrus

    Noun

    cirrus

    (plural cirri)
    1. (botany) A tendril.
    2. (zoology) A thin tendril-like appendage.
    3. (meteorology) A principal high-level cloud type characterised by white, delicate filaments or wisps, of white (or mostly white) patches, or of narrow bands, found at an altitude of above 7000 metres.
      • 1996, David Foster Wallace, Infinite Jest, Abacus 2013, p. 15:The blue sky is glossy and fat with heat, a few thin cirri sheared to blown strands like hair at the rims.
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