Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.
Class I. Words Expressing Abstract RelationsSection V. Number
2. Determinate Number
96. Quadruplication.
NOUN:QUADRUPLICATION.VERB:QUADRUPLICATE, biquadrate, multiply by four.
ADJECTIVE:FOURFOLD; quadrable, quadruple, quadruplex, quadruplicate, quadrible; fourth.
ADVERB:FOUR TIMES; in the fourth place, fourthly.