To hydrate is to add or absorb water. It's hot outside — don't forget to hydrate by drinking plenty of water!

If you want to sound fancy, you can use the word hydrate every time you get a drink of water. Along with most organisms, we need to hydrate, or ingest water, to stay alive. This verb is also commonly used to mean "moisturize," as in "this magic cream will hydrate your skin like you won't believe!" As a noun, hydrate refers to a chemical compound that includes water molecules. A French chemist coined the noun in 1800 from the Greek hydor, "water."

Definitions of hydrate

n any compound that contains water of crystallization

a hydrate that contains one molecule of water per molecule of the compound
Type of:
chemical compound, compound
(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

v supply water or liquid to in order to maintain a healthy balance

“the bicyclists must be hydrated frequently”
Type of:
furnish, provide, render, supply
give something useful or necessary to

v cause to be hydrated; add water or moisture to

hydrate your skin”
dehydrate, desiccate, dry up, exsiccate
lose water or moisture
slack, slake
cause to heat and crumble by treatment with water
alter by exposure to air with conversion at least in part to a carbonate
Type of:
humidify, moisturise, moisturize
make (more) humid

v become hydrated and combine with water

Type of:
undergo a change; become different in essence; losing one's or its original nature

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