hyd.

Adjective

hydraulic (not comparable)

1. Pertaining to water.
   • Tho' there are but seventeen feet water^([sic]) in the channel, I have seen vessels of five hundred ton enter into it. I know not why this entrance is left so neglected, as we are not in want of able engineers in France, in the hydraulic branch, a part of the mathematics to which I have most...1757, Antoine-Simon Le Page du Pratz, History of Louisiana, page 47
2. Related to, or operated by, hydraulics.
   • A hydraulic press is operated by the differential pressure of water on pistons of different dimensions.
3. Able to set underwater.
   • hydraulic gypsum; hydraulic cements

See all 4 meanings of hydraulic

Noun

hydraulics (uncountable)

1. The engineering science that deals with practical applications where liquid is in motion and transmits energy.
   • applied hydraulics
2. The hydraulic system of a vehicle or other machine.
   • hydraulics system