fourfold (not comparable)

1. Four times as great; quadruple.
2. Comprised of four individual members.

• quadruple, quadruplicate

fourfold (not comparable)

1. by a factor of four
   • 1611, The Holy Bible, […] (King James Version), imprinted at London: By Robert Barker, […], OCLC 964384981 ↗, Bible Samuel/#12 2 Samuel:12–6 ↗:

     He shall restore the lamb fourfold.

• quadruply; see also Thesaurus:four times

fourfold (fourfolds, present participle fourfolding; past and past participle fourfolded)

1. to increase to four times as much; to multiply by four

• quadruple, quadruplicate

• French: quadrupler
• German: vervierfachen, vierfachen
• Italian: quadruplicare
• Portuguese: quadruplicar
• Russian: учетверять
• Spanish: cuadruplicar

fourfold (plural fourfolds)

1. (mathematics) An algebraic variety of Degree of an algebraic variety 4.