Search Result for "quadrupling": 
Wordnet 3.0

NOUN (1)

1. increase by a factor of four;


The Collaborative International Dictionary of English v.0.48:

Quadruple \Quad"ru*ple\, v. t. [imp. & p. p. Quadrupled; p. pr. & vb. n. Quadrupling.] [L. quadruplare: cf. F. quadrupler.] To multiply by four; to increase fourfold; to double; to double twice. --A. Smith. [1913 Webster]
WordNet (r) 3.0 (2006):

quadrupling n 1: increase by a factor of four