quadruply

quadruple

[kwo-droo-puhl, -druhp-uhl, kwod-roo-puhl]
adjective
1.
fourfold; consisting of four parts: a quadruple alliance.
2.
four times as great.
3.
Music. having four beats to a measure.
noun
4.
a number, amount, etc., four times as great as another.
5.
something, as a series of acrobatic somersaults, made up of four clearly defined parts or stages: the first trapeze artist to perform a quadruple successfully.
verb (used with object), verb (used without object), quadrupled, quadrupling.
6.
to make or become four times as great: To serve 24 people, quadruple the recipe. My savings quadrupled in 20 years.

Origin:
1325–75; Middle English < Latin quadruplus; cf. quadru-, duple

quadrupleness, noun
quadruply, adverb
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World English Dictionary
quadruple (ˈkwɒdrʊpəl, kwɒˈdruːpəl)
 
vb
1.  to multiply by four or increase fourfold
 
adj
2.  four times as much or as many; fourfold
3.  consisting of four parts
 
n
4.  a quantity or number four times as great as another
 
[C16: via Old French from Latin quadruplus, from quadru- (see quadri-) + -plus -fold]
 
'quadruply
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

quadruple
late 14c., from L. quadruplare "make fourfold," from quadruplus (n.) "quadruple," from quadri- "four" + -plus "fold." Quadruplets "four children in one birth" is first recorded 1787. The abbreviation of it to quad is first attested 1851.
Online Etymology Dictionary, © 2010 Douglas Harper
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