Correct spelling for the English word "tety" is [tˈɛti], [tˈɛti], [t_ˈɛ_t_i] (IPA phonetic alphabet).
A skin disease of uncertain nature, occurring in Madagascar; it is marked chiefly by a pustular eruption around the mouth.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.