the first person to become aware that a particular place or thing exists (第一個)發現 Sir Alexander Fleming, the discoverer of penicillin 盤尼西林的發現者亞歷山大·弗萊明爵士
a person who finds somebody/something that was hidden or that they did not expect to find (出乎意料地)發現,找到,發覺 I was the lucky discoverer of a very valuable painting. 我幸運地發現了一幅非常珍貴的畫。