former measure of the United States economy; the total market value of goods and services produced by all citizens and capital during a given period (usually 1 yr)
the quality of being enduring and free from change or variation; "early mariners relied on the constancy of the trade winds"
faithfulness and dependability in personal attachments (especially sexual fidelity)
(psychology) the tendency for perceived objects to give rise to very similar perceptual experiences in spite of wide variations in the conditions of observation
(orthopedics) the act of pulling on a bone or limb (as in a fracture) to relieve pressure or align parts in a special way during healing; "his leg was in traction for several days"