1. [adj]  discovered or determined by scientific observation; "variation in the ascertained flux depends on a number of factors"; "the discovered behavior norms"; "discovered differences in achievement"; "no explanation for the observed phenomena"
2. [adj]  no longer concealed; uncovered as by opening a curtain; `discovered' is archaic and primarily a theater term; "the scene disclosed was of a moonlit forest"

DISCOVERED is a 10 letter word that starts with D.