spissitude (n.)youdaoicibaDictYouDict[spissitude 词源字典]
"density, thickness, compactness," mid-15c., from Latin spissitudo "thickness, density," from spissus "thick, dense, compact, close" (source of Italian spesso, Spanish espeso, Old French espes, French épais). Related: Spissated.[spissitude etymology, spissitude origin, 英语词源]