tenfoldPronunciation: /ˈtɛnfəʊld/Translate tenfold | into Spanish Definition of tenfold adjective ten times as great or as numerous:a tenfold increase in the use of insecticides having ten parts or elements. adverb by ten times; to ten times the number or amount:production increased tenfoldtenfold in other Oxford dictionaries Definition of tenfold in the US English dictionary