Emily Dickinson Lexicon

EX-TEM'PO-RAL, a. [L. extemporalis; ex and tempus, time.]

1. Made or uttered at the moment, without premeditation; as, an extemporal discourse. Hooker. Wotton.
2. Speaking without premeditation. B. Jonson. Instead of this word, extemporaneous and extemporary are now used.