hydr-

combining form

variants or hydro-

1

a

: water

hydrous

hydroelectric

b

: liquid

hydrokinetic

2

: hydrogen : containing or combined with hydrogen

hydrocarbon

hydroxyl

3

: hydroid

hydromedusa

Word History

Etymology

Latin hydr-, hydro-, from Greek, from hydōr — more at water

Kids Definition

hydr-

combining form

variants or hydro-

1

: water

hydrous

hydroelectricity

2

: hydrogen : containing or combined with hydrogen

hydrocarbon

Etymology

derived from Greek hydōr "water"