Quiz: Remember the definition of mal de mer?
1560s, noun of action from elucidate.
1560s, perhaps via Middle French élucider (15c.) or directly from Late Latin elucidatus, past participle of elucidare "make clear," from ex- "out, away" (see ex-) + lucidus "clear" (see lucid). Related: Elucidated; elucidates; elucidating.