sima 1
— simatic /suy mat"ik/ , adj.
/suy"meuh/ , n. Geol.
an assemblage of rocks, rich in silica and magnesium, that constitutes the lower layer of the earth's crust and is found beneath the ocean floors and the sial of continents.
[ si ( licium ) SILICIUM + ma ( gnesium ) MAGNESIUM ]
sima 2
/suy"meuh/ , n. Archit.
the uppermost member of a full classical order, usually a cyma recta, representing a roof gutter; cymatium.
[ var. of CYMA ]