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...
- 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...
- In sound and music, an envelope describes how a sound changes over time. It may relate to elements such as amplitude (volume), frequencies (with the use...
- 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...
- An envelope detector (sometimes called a peak detector) is an electronic circuit that takes a (relatively) high-frequency amplitude modulated signal as...
- In physics and engineering, the envelope of an oscillating signal is a smooth curve outlining its extremes. The envelope thus generalizes the concept of...
- The nuclear envelope, also known as the nuclear membrane, is made up of two lipid bilayer membranes that in eukaryotic cells surrounds the nucleus, which...
- In aerodynamics, the flight envelope, service envelope, or performance envelope of an aircraft or spacecraft refers to the capabilities of a design in...
- In East and Southeast Asian cultures, a red envelope, red packet or red pocket (simplified Chinese: 红包; traditional Chinese: 紅包; pinyin: hóngbāo; Pe̍h-ōe-jī:...
- altered by components such as filters, which cut or boost frequencies; envelopes, which control articulation, or how notes begin and end; and low-frequency...