Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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part of speech: prefix
definition 1: a prefix that means "from," "away from," or "off."
The word "deplane" means "to get off an airplane."
definition 2: a prefix that means "down" or "lower."
To descend the stairs is to go down the stairs.
definition 3: a prefix that means to undo or reverse an action.
To deflate a tire is to take out the air that has been pumped into it.