- dedoA traditional short Spanish unit of length, usually about equal to 1.75 cm.
- digitusAn Ancient Roman unit of length, approximately 0.73 inches.
- digitigradeOf an animal: walking on the toes, putting the weight of the body mainly on the ball of the foot, with the back of the foot, or heel, raised.
- digitoriumA small keyboard used by pianists for exercising the fingers, without producing any sound.
- ditalA finger-operated key for raising the pitch of a guitar by a semitone.