| 释义 |
Definition of plume alum in English: plume alumnoun rare A mineral consisting of a double sulphate of aluminium and iron, occurring as tufts of silky, fibrous crystals.
Origin Early 17th century; earliest use found in Richard Surflet (fl. 1600–1616), translator. Definition of plume alum in US English: plume alumnoun rare A mineral consisting of a double sulphate of aluminium and iron, occurring as tufts of silky, fibrous crystals.
Origin Early 17th century; earliest use found in Richard Surflet (fl. 1600–1616), translator. |