Trog TR trabeculae of corpora cavernosa penis trochoidal focusing mass spectrometer tropospheric refraction of radio wave trochanteric bursa of gluteus minimus tranditional microscopic pap\\\'s smears trachoma and inclusion conjunctivitis truncus subclavius dexter/sinister Trachelomonas lacustris var. ovalis Trachelomonas intermedia var. minor tropospheric scatter communica-tion