hot fluid or semi-fluid material below or within the earth's crust from which lava and other igneous rock is formed by cooling
(地壳中的)岩浆。
[count noun]
〈旧,主美〉 (药物)乳浆剂,乳剂。
"late Middle English (in the sense ‘residue of dregs after evaporation or pressing of a semi-liquid substance’): via Latin from Greek