Pronunciation: (di-skuv'ur),[key] —v.t. 1. to see, get knowledge of, learn of, find, or find out; gain sight or knowledge of (something previously unseen or unknown): to discover America; to discover electricity. 2. to notice or realize: I discovered I didn't have my credit card with me when I went to pay my bill. 3. Archaic.to make known; reveal; disclose.