TRICHIASIS Meaning of TRICHIASIS in English [ ˌtrɪkɪ'eɪsɪs , trɪ'kʌɪəsɪs ]■ noun Medicine ingrowth or introversion of the eyelashes.OriginC17: via late L. from Gk trikhiasis , from trikhian 'be hairy'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004