opacity opacous opah opah opahs opal opal opaled opalesce opalesced
| opalescence opalescence opalescences opalescent opalescent opalescently (current term) opalescent dentin opalesces opalescing Opalina
| opaline opalines opaline patch opalise opalised opalize opalized opals Opalski cell opal codon
|