ALL meanings of sima
si·ma
S s - noun sima the uppermost member of a full classical order, usually a cyma recta, representing a roof gutter; cymatium. 1
- noun sima the silicon-rich and magnesium-rich rocks of the earth's oceanic crust, the most abundant individual rock being basalt 0
- noun sima the earth's continental lower crust, probably comprised of gabbro rather than basalt 0
- noun sima the heavy igneous rock material of the earth's inner crust, forming a continuous shell and underlying the sial and also the ocean floors 0