The linear distance between the extremities of an airfoil.(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.
Use "wingspan" in a sentence
"His wingspan is 3 inches longer than his 6-4 height."
"Its wingspan is 172 feet — greater than the distance covered by Orville Wright during his first flight at Kitty Hawk."
"Amongst living birds of prey, only condors exceed these measurements - the Andean condor Vultur gryphus possibly exceeding 3 m in wingspan and reaching 12 kg."