si·al 
(sīăl′)
(sīăl′)n.
Rock rich in silicon and aluminum forming the upper layer of the earth's crust beneath all continental landmasses.
[SI(LICON) + AL(UMINUM).]
- uncompensated
- uncompetitive
- uncompetitively
- uncompetitiveness
- uncomplaining
- uncomplainingly
- uncompleted
- uncomplicated
- uncomplimentary
- uncomprehending
- uncomprehendingly
- uncompromisable
- uncompromising
- uncompromisingly
- uncomputerized
- unconceivable
- unconceivably
- unconcern
- unconcerned
- unconcernedly
- unconcernedness
- unconditional
- unconditionality
- unconditionally
- unconditioned