hy·drau·lic 
(hī-drôlĭk)
(hī-drôlĭk)adj.
1. Of, involving, moved by, or operated by a fluid, especially water, under pressure.
2. Able to set and harden under water, as Portland cement.
3. Of or relating to hydraulics.
[Latin hydraulicus, from Greek hudraulikos, from hudraulis, water organ : hudro-, hudr-, hydro- + aulos, pipe, flute.]
hy·drauli·cal·ly adv.
- special jury
- Special K
- special legislation
- specially
- special master
- special-needs
- special needs
- specialness
- Special Olympics
- special operation
- special operator
- special pleading
- special relativity
- special sense
- special session
- special team
- special theory of relativity
- specialty
- speciate
- speciation
- speciational
- specie
- species
- speciesism
- speciesist