excelsior Look up excelsior at Dictionary.com
Latin excelsior "higher," comparative of excelsus (adj.) "high, elevated, lofty," past participle of excellere "to rise, surpass, be superior, be eminent," from ex "out from" (see ex-) + -cellere "rise high, tower," related to celsus "high, lofty, great," from PIE root *kel- (2) "to be prominent; hill." Taken 1778 as motto of New York State, where it apparently was mistaken for an adverb. Popularized 1841 as title of a poem by Longfellow. As a trade name for "thin shavings of soft wood used for stuffing cushions, etc.," first recorded 1868, American English.