COMMUTATION n.
l payments or allowances; as, commutation of tithes; commutation of fares; commutation of copyright; commutation of rations. Angle of commutation (Astron.), the difference of the geocentric longitudes of the sun and a planet. -- Commutation of tithes, the substitution of a regular payment, chargeable to the land, for…
TOOTH n.
power; by all possible means. L'Estrange. "I shall fight tooth and nail for international copyright." Charles Reade. -- Tooth coralline (Zoöl.), any sertularian hydroid. -- Tooth edge, the sensation excited in the teeth by grating sounds, and by the touch of certain substances, as keen acids. -- Tooth key, an instru…