hydro-
1
a combining form meaning “water,” used in the formation of compound words: hydroplane; hydrogen.
Also
especially before a vowel,
hydr-1.
Origin of hydro-
1
< Greek, combining form of
hýdōr water
Words nearby hydro-
hydride,
hydrilla,
hydriodic,
hydriodic acid,
hydro,
hydro-,
hydro-lyase,
hydro-ski,
hydroa,
hydroa vacciniforme,
hydroacoustics
Definition for hydro- (2 of 2)
hydro-
2
a combining form representing hydrogen in compound words, denoting especially a combination of hydrogen with some negative element or radical: hydrobromic.
Also
especially before a vowel,
hydr-2.
British Dictionary definitions for hydro-
hydro-
sometimes before a vowel hydr-
combining form
indicating or denoting water, liquid, or fluid
hydrolysis; hydrodynamics
indicating the presence of hydrogen in a chemical compound
hydrochloric acid
indicating a hydroid
hydrozoan
Word Origin for hydro-
from Greek
hudōr water
Medical definitions for hydro-
hydro-
pref.
Water; liquid:hydrocephalus.
Hydrogen:hydrochloride.
Scientific definitions for hydro-
hydro-
A prefix that means: water (as in hydroelectric) or hydrogen, (as in hydrochloride).