Definition of Envelope. Meaning of Envelope. Synonyms of Envelope

Here you will find one or more explanations in English for the word Envelope. Also in the bottom left of the page several parts of wikipedia pages related to the word Envelope and, of course, Envelope synonyms and on the right images related to the word Envelope.

Definition of Envelope

Envelope
Envelope En"vel*ope (?; 277), Envelop En*vel"op (?; 277), n. [F. enveloppe.] 1. That which envelops, wraps up, encases, or surrounds; a wrapper; an inclosing cover; esp., the cover or wrapper of a document, as of a letter. 2. (Astron.) The nebulous covering of the head or nucleus of a comet; -- called also coma. 3. (Fort.) A work of earth, in the form of a single parapet or of a small rampart. It is sometimes raised in the ditch and sometimes beyond it. --Wilhelm. 4. (Geom.) A curve or surface which is tangent to each member of a system of curves or surfaces, the form and position of the members of the system being allowed to vary according to some continuous law. Thus, any curve is the envelope of its tangents.

Meaning of Envelope from wikipedia

- An envelope is a common packaging item, usually made of thin, flat material. It is designed to contain a flat object, such as a letter or card. Traditional...
- An envelope detector is an electronic circuit that takes a (relatively) high-frequency amplitude modulated signal as input and provides an output which...
- In sound and music, an envelope describes how a sound changes over time. It may relate to elements such as amplitude (volume), filters (frequencies) or...
- A viral envelope is the outermost layer of many types of viruses. It protects the genetic material in their life-cycle when traveling between host cells...
- The envelope system, also known as the envelope budgeting method, is a po****r method for visualizing and maintaining a flexible budget. The key idea...
- In geometry, an envelope of a planar family of curves is a curve that is tangent to each member of the family at some point, and these points of tangency...
- In physics and engineering, the envelope of an oscillating signal is a smooth curve outlining its extremes. The envelope thus generalizes the concept of...
- In aerodynamics, the flight envelope, service envelope, or performance envelope of an aircraft or interplanetary spacecraft refers to the capabilities...
- balloon is a lighter-than-air aircraft consisting of a bag, called an envelope, which contains heated air. Suspended beneath is a gondola or wicker basket...
- used to differentiate categories of files. The Manila envelope is a specific colored envelope designed for transporting do****ents. It is made of thick...
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