The replenishment of water and electrolytes lost through dehydration.(noun)
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Use "rehydration" in a sentence
"No regular maintenance required such as rehydration, which is needed for some lead batteries."
"$15,800 per cholera death is stunning when one realizes that cholera is treatable and curable with immediate rehydration, meaning IV fluids and oral salts."
"So your girls know, they made a difference in a school with 250 children, helped a community of several hundred literally saved lives by providing the oral rehydration powder and are helping a family that had nowhere else to turn for help."