| Derived from | : | Marseille (Populated place) (France: Provence-Alpes-Côte dʼAzur) | |
Ref: LPSN, 2020-present: [21 May 2026] ("L. fem. n. Massilia, Latin name for Marseille"). |
| Derived from | : | methane | |
Ref: LPSN, 2020-present: [21 May 2026] ("N.L. pref. methano-, pertaining to methane (in compound words)"). |