— suctional , adj.
/suk"sheuhn/ , n.
1. the act, process, or condition of sucking.
2. the force that, by a pressure differential, attracts a substance or object to the region of lower pressure.
3. the act or process of producing such a force.
v.t.
4. to draw out or remove by aspiration.
[ 1605-15; suction- (s. of suctio ) a sucking, equiv. to L suct ( us ) (ptp. of sugere to SUCK) + -ion- -ION ]