(philosophy) Especially in philosophical idealism, the world as it appears to human beings as a result of being structured by human understanding; the world as experienced, as opposed to the world ...

(organic chemistry, medicine) Any of several fluoro derivatives of estradiol that have biological activity. Such compounds having isotopically-labelled fluorine atoms are used in medical imaging.

superlative form of female: most female

simple past tense and past participle of nature