Meanings
Origin
From tranquillity + -ite, after the Sea of Tranquillity, a basin on the Moon where the mineral was first found.
Full word history & related roots →Cite this entry
tranquillityite. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/tranquillityite
“tranquillityite.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tranquillityite. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “tranquillityite,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/tranquillityite.
Source: tranquillityite on Wiktionary, CC BY-SA 4.0.