Observatory
来自Big Physics
late 17th century; from modern Latin observatorium, from Latin observat- ‘watched’, from the verb observare (see observe).
wiktionary
Borrowed from French observatoire.
etymonline
observatory (n.)
"building for observing astronomical phenomena," 1670s (in reference to Greenwich), from French observatoire, from observer (v.) "to observe, watch over, follow," from Latin observare "watch over," from ob "in front of, before" (see ob-) + servare "to watch, keep safe," from PIE root *ser- (1) "to protect."
