Idea: Lexidiem, the word of the day.
Why isn’t there a word that means “Word of the day?” Well now there is.
Lexidiem. n. sing. lek-si’-dee-im. (preferred) lek-si-dee’-im (altern. accepted) 1. Word of the day. [Modern American English, from Greek lexis (word) and Latin diem (day), reflecting the hodgepodge of international roots that make up Modern American English words].