Definition of "proportional" []

• Forming a relationship with other parts or quantities; being in proportion. (adjective)
• Properly related in size, degree, or other measurable characteristics; corresponding: Punishment ought to be proportional to the crime. (adjective)
• Mathematics Having the same or a constant ratio. (adjective)
• One of the quantities in a mathematical proportion. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "T, sea level rise would also contain a term proportional to the time derivative of temperature, dT/dt."
• "IRV is a band-aid, trying to fix fatal flaws in proportional representation."
• "I know that the Liberal Democrats want STV, but now, I think that as the Make My Vote Count campaign rightly recognises, any change to the system that makes it slightly more proportional is worth voting for."