Did you know?
Everyone knows that if you stick a feather in your hat for, say, a Fourth of July celebration, it is called “macaroni.” But what does a Yankee Doodle Dandy call the celebration itself, specifically when it marks the 250th year since the nation’s founding? Such a special day calls for a special word and semiquincentennial fits the bill, as it does for any anniversary of the same esteemed and venerable vintage. If the word’s mouthful of seven syllables overwhelms, it’s simple to break down. The prefix semi- here means “half in quantity or value,” while quincentennial refers to a whopping 500th anniversary or its celebration. (Quin- comes from the Latin word quinque, meaning “five,” and centennial comes in part from the Latin centum, meaning “hundred.”) Hence a semiquincentennial is celebrated precisely halfway en route to a quincentennial. May knowing this etymology be a feather in your cap at your semiquincentennial BBQ.
Cite this Entry
“Semiquincentennial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/semiquincentennial. Accessed 7 Jul. 2026.
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