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Definition of: dactylion
(dak·til′ē·on) noun plural ·tyl·i·a (-til′· ē·ə)
1. The extreme tip or end of the middle finger when the hand is fully extended: a measuring point in anthropometry.
2. The joining or webbing together of fingers; syndactylism. Also dac·tyl′i·um (-əm). [<NL <Gk. daktylos finger]
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