- Plutonian (adj.)
[Plutonian 词源字典]
- 1660s, "pertaining to the god Pluto," from Latin Plutonius, from Greek Ploutonius, from Plouton "pertaining to Pluto" (see Pluto). Geological sense is from 1828 (see plutonic). Planetary sense by 1952.[Plutonian etymology, Plutonian origin, 英语词源]