a statement in the U.S. Constitution (Article I, Section 8) granting Congress the power to pass all laws necessary and proper for carrying out the enumerated list of powers.
noun, Mechanics. 1. a collision in which the total kinetic energy of the colliding bodies or particles is the same after the collision as it was before (opposed to ). elastic collision (ĭ-lās’tĭk) Physics A collision between bodies in which the total kinetic energy of the bodies is conserved. In a perfectly elastic collision, no […]
noun, Physics. 1. the temporary change in length, volume, or shape produced in an elastic substance by a stress that is less than the elastic limit of the substance.
- Elastic fiber
elastic fiber n. Any of the fibers 0.2 to 2 micrometers in diameter containing elastin. They branch and anastomose to form networks and fuse to form fenestrated membranes. Also called yellow fiber.
elasticin e·las·ti·cin (ĭ-lās’tĭ-sĭn) n. See elastin.