| SI | the syllable naming the seventh (subtonic) note of any musical scale in solmization |
|---|---|
| SI | a complete metric system of units of measurement for scientists |
| SI | a tetravalent nonmetallic element |
| SI | the granite-like rocks that form the outermost layer of the earth's crust |
| SI | inflammation of the salivary glands |
| SI | North American bluebirds |
| SI | an arthropod family including: alderflies |
| SI | type genus of the Sialidae |
| SI | dark-colored insect having predaceous aquatic larvae |
| SI | a stone formed in the salivary gland |
| SI | country of southeastern Asia that extends southward along the isthmus of Kra to the Malay peninsula |
| SI | large black gibbon of Sumatra having the 2nd and 3rd toes partially united by a web |