perpatulus Save DMLBS perpatulus [ML < CL per-+patulus] 1 completely open. ut ore ~o praedicaret B. V. Dunst. 30; ~us, valde patens Osb. Glouc. Deriv. 476; opyn’‥ ‥ patulus quod semper patet, ~us CathA. 2 perfectly apparent. 1488 titulus avite celle de Romburgth ~us ObitR Durh. 88.