A shape that resembles or approximates a cone, but isn't a perfect cone.
From Greek kōnos (cone) + -oid (resembling or having the form of). The suffix -oid indicates something that is cone-like but not exactly a true cone.
In mathematics, a conoid is actually a specific type of ruled surface that looks cone-like but has special geometric properties—it's used in advanced calculus and shows up in architectural design!
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