evolution of carbon dioxide

n.
  1. An expression of the rate at which carbon dioxide is produced by the body, usually given as the microliters of carbon dioxide produced in 1 hour by 1 milligram dry weight of tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.