| envelop | 1. That which envelops, wraps up, encases, or surrounds; a wrapper; an inclosing cover; especially, the cover or wrapper of a document, as of a letter. 2. <astronomy> The nebulous covering of the head or nucleus of a comet; called also coma. 3. 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. 4. <geometry> 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. 4. A set of limits for the performance capabilities of some type of machine, originally used to refer to aircraft. Now also used metaphorically to refer to capabilities of any system in general, including human organizations, especially. In the phrase push the envelope. It is used to refer to the maximum performance available at the current state of the technology, and therefore refers to a class of machines in general, not a specific machine. Push the envelope Increase the capability of some type of machine or system; usu. By technological development. Origin: F. Enveloppe. Source: Websters Dictionary (01 Mar 1998) |
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| envelope | 1. <virology> Lipoprotein outer layer of some viruses derived from plasma membrane of the host cell. 2. <microbiology> The plasma membrane and cell wall complex of a bacterium. (11 Nov 1997) |
| envelope conformation | See: Haworth conformational formulas of cyclic sugars. (05 Mar 2000) |
| envelope flap | A mucoperiosteal flap retracted from a horizontal incision along the free gingival margin. (05 Mar 2000) |
| envelope |
a flat rectangular paper container for papers any wrapper or covering a curve that is tangent to each of a family of curves a natural covering (as by a fluid); "the spacecraft detected an envelope of gas around the comet" the maximum operating capability of a system; "test pilots try to push the envelope" the bag containing the gas in a balloon
Ãâó: wordnet.princeton.edu/perl/webwn
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| envelope flap |
a mucoperiosteal flap retracted from a horizontal linear incision (as along the free gingival margin) with no vertical component of that incision.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| envelope |
An envelope is a packaging product, usually made of flat, planar material such as paper or cardboard, designed to contain a flat object such as a letter. The traditional type is made from a sheet of paper cut to one of three shapes : the rhombus (also referred to as a lozenge or diamond), the short-arm cross, and the kite. ...
Ãâó: en.wikipedia.org/wiki/Envelope
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| envelope |
is the outer layer of some viruses (eg HBV). It derives from plasma membrane of the host cell.
Ãâó: www.geocities.com/HotSprings/3982/dictionary.html
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| envelope |
the outer covering of certain types of viruses.
Ãâó: www.aegis.com/pubs/beta/1999/be990414.html
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| envelop | enclose or enfold completely with or as if with a covering |
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| envelop | any wrapper or covering |
| envelop | a flat rectangular paper container for papers |
| envelop | the bag containing the gas in a balloon |
| envelop | the maximum operating capability of a system |
| envelop | a natural covering (as by a fluid) |
| envelop | a curve that is tangent to each of a family of curves |
| envelop | completely enclosed or swallowed up |
| envelop | surrounding and closing in on or hemming in |
| envelop | concealing by enclosing or wrapping as if in something that is not solid |
| envelop | the act of enclosing something inside something else |
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