Definition of "incurvature" [incurvature]

• A curving or the state of being curved. (noun)
• Specifically, in entomology: The state of being curved inward. (noun)
• A part or margin curved inward, or toward the median line. (noun)

The Century Dictionary (Public Domain)

• "The incurvature of the legs proves that this young man must have walked with bent knees like the old men of our own day."
• "The neck on your maquette looks much more plausible than those shown on many other reconstructions, especially with the small rolls of flab at the incurvature."
• ""Any thumb-prints of Italians with that peculiar incurvature of the ball of the thumb that denotes a Sicilian brigand?""