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Meaning of dactylology

dac•ty•lol•o•gy

Pronunciation: (dak"tu-lol'u-jē), [key]
— pl. -gies.
  1. the technique of communicating by signs made with the fingers, esp. in the manual alphabets used by the deaf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.