proportional

[pruh-pawr-shuh-nl, -pohr-]
adjective
1.
having due proportion; corresponding.
2.
being in or characterized by proportion.
3.
of, pertaining to, or based on proportion; relative.
4.
Mathematics.
a.
(of two quantities) having the same or a constant ratio or relation: The quantities y and x are proportional if y/x = k, where k is the constant of proportionality.
b.
(of a first quantity with respect to a second quantity) a constant multiple of: The quantity y is proportional to x if y = kx, where k is the constant of proportionality.

Origin:
1350–1400; Middle English proporcional < Latin prōportiōnālis. See proportion, -al1

proportionality, noun
proportionally, adverb
interproportional, adjective
nonproportional, adjective
nonproportionally, adverb
subproportional, adjective
subproportionally, adverb
unproportional, adjective
unproportionally, adverb

proportional, proportionate.


1. harmonious, comparative, accordant, consonant, proportionate.
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World English Dictionary
proportional (prəˈpɔːʃənəl)
 
adj
1.  of, involving, or being in proportion
2.  maths having or related by a constant ratio
 
n
3.  maths an unknown term in a proportion: in a/b = c/x, x is the fourth proportional
 
proportion'ality
 
n
 
pro'portionally
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
The proportionally long necks of sauropods must have had some adaptive
  advantage for the trait to be so widespread and persistent.
The people that use the oil should pay for those protections proportionally.
Each subsequent years workforce pays more taxes and receives proportionally
  less benefits than the previous years.
First, energy use in industrialized countries id not growing proportionally to
  population.
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