| SIMA | rock that form the continuous lower layer of the earth's crust |
|---|---|
| SIMA | East Indian silk cotton tree yielding fibers inferior to kapok |
| SIMA | type genus of Simaroubaceae |
| SIMA | tree of the Amazon valley yielding a light brittle timber locally regarded as resistant to insect attack |
| SIMA | medium to large tree of tropical North and South America having odd-pinnate leaves and long panicles of small pale yellow flowers followed by scarlet fruits |
| SIMA | chiefly tropical trees and shrubs with bitter bark having dry usually one-seeded winged fruit |
| SIMA | a herbicide used to control weeds (especially among crops) |