• Noun, plural -lae

    Astronomy .
    Also called diffuse nebula. a cloud of interstellar gas and dust. Compare dark nebula , emission nebula , reflection nebula .
    (formerly) any celestial object that appears nebulous, hazy, or fuzzy, and extended in a telescope view.
    Pathology .
    a faint opacity in the cornea.
    cloudiness in the urine.
    any liquid medication prepared for use as a spray.

    tác giả


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