- Word History, Word Explorer, Word Parts
|part of speech:
||an upright pipe with a valve from which water can be drawn from a water main.
It is against the law to park in front of a fire hydrant.
comes from an ancient Greek word, hydor
, which means "water." A number of other English words contain the letters hydr-
; most of them have something to do with water. Hydrogen
is a word invented by a French scientist in the 1700s. It means "producing water," because hydrogen forms water when it is mixed with oxygen.