The mention within an etymology section isn't enough. If the word is used, it's used. It doesn't matter that much whether you consider it to be correct usage. — surjection ⟨??⟩ 22:30, 22 June 2020 (UTC)
Re. 'cupula', your personal pronunciation is not the issue. You need refs, and the preponderance of refs (Merriam-Webster, Random House, OED) have /kju:/ as the US pronunciation. kwami (talk) 14:19, 21 January 2022 (UTC)