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Latin, literally "little thing, shred, trifle." Related: Hilar.
hilar hi·lar (hī'lər)
Of or relating to a hilum.
hilum hi·lum (hī'ləm)
n. pl. hi·la (-lə)
A depression or slit-like opening through which nerves, ducts, or blood vessels enter and leave in an organ or a gland. Also called porta.