Archaic anatomical term for the skin or integument; the dura or tough outer membrane.
From Latin 'cutis' (skin) + 'dura' (tough, hard—as in 'dura mater'). An obsolete medical term combining skin and durability.
This word vanished because modern anatomy developed much more precise terminology, but it shows how doctors once thought of skin as a 'tough layer' protecting everything inside.
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