Relating to or resembling an angle or corner-shaped structure; having angular characteristics.
From gonia (Greek 'angle') plus the suffix -ac, denoting relation or possession of a quality. Used in anatomical and geometric contexts to describe angular features.
Medical texts use 'goniac' to describe things like the goniac angle in your jaw—it's the angle formed where your jaw hinges, and it's actually unique to each person like a fingerprint!
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