from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The amount of air that can be forcibly expelled from the lungs after breathing in as deeply as possible.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The maximum volume of air that can be discharged from the lungs following maximum inspiration.
from the GNU version of the Collaborative International Dictionary of English
- adj. the breathing capacity of the lungs; -- expressed by the number of cubic inches of air which can be forcibly exhaled after a full inspiration.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the maximum amount of air that can be exhaled after a maximum inhalation (usually tested with a spirometer); used to determine the condition of lung tissue
Sorry, no etymologies found.