I. adjective suffix
Etymology: Greek -ōtikos, from -ōtos, ending of verbals, from -o- (stem of causative verbs in -oun) + -tos, suffix forming verbals — more at -ed
of, relating to, or characterized by a (specified) action, process, or condition <symbiotic> II. adjective combining form Etymology: Greek ōtikos of the ear, from ōt-, ous ear having (such) a relationship to the ear <dichotic>
New Collegiate Dictionary. 2001.