dactylology: Meaning and Definition of

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.