Envelope (disambiguation) - Definition and Overview

• An envelope is a flat, folded paper container often used for mailing things.
• An envelope is a set of headers for an e-mail
• An envelope is a mathematical curve defined as being tangent to a given family of lines (or curves).
• An envelope is a curve that bounds another curve or set of curves, as the modulation envelope of an amplitude-modulated carrier wave in electronics. See envelope detector.
• An envelope is the shape of a sound which may be controlled by a synthesizer or sampler in music, derived from the above definition for electronics.
• An envelope is the outer layer of some viruses.
• In aerospace, an envelope is the limits within which an aircraft can operate.
• The envelope paradox is a paradox in probability.