名詞 gypsum:

1. a common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris)

1. A rigid board made of layers of fiberboard or paper bonded to a gypsum plaster core, used instead of plaster or wood panels in construction to form walls.
   石膏灰泥板，灰膠紙柏板由石膏灰泥作芯板結合幾層纖維板或紙漿板制成的硬板，在建筑中用于代替灰泥或木板來建造墻壁
2. A dense translucent, white or tinted fine-grained gypsum.
   雪花石膏一種不透明的、白色或淺色的紋理細密的石膏

gyp.sum

n.（名詞）
A widespread colorless, white, or yellowish mineral, CaSO4·2H 2O, used in the manufacture of plaster of Paris, various plaster products, and fertilizers.
石膏：一種分布廣泛、無色、白色或淡黃色礦石CaSO4·2H 2O,用于制作熟石、各種石膏產品和化肥

來源：
Middle English gipsum
中古英語 gipsum
from Latin gypsum
源自 拉丁語 gypsum
from Greek gupsos
源自 希臘語 gupsos
[probably of Semitic origin]
[有可能源自閃米特人語]