envelope

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envelope

 [en´vĕ-lōp]
1. an encompassing structure or membrane.
2. in virology, the outer lipoprotein coat of a large virus, surrounding the capsid and usually furnished, at least partially, by the host cell. Called also peplos.
3. in bacteriology, the cell wall and the plasma membrane considered together.
nuclear envelope the condensed double layer of lipids and proteins enclosing the cell nucleus and separating it from the cytoplasm; its two concentric membranes, inner and outer, are separated by a perinuclear space.

en·ve·lope

(en'vĕ-lōp), Avoid the mispronunciation ahn'vĕ-lōp.
In anatomy, a structure that encloses or covers.

envelope

(ĕn′və-lōp′, ŏn′-)
n.
Biology An enclosing structure or cover, such as a membrane or the outer coat of a virus.

en·ve·lope

(en'vĕ-lōp)
anatomy Any structure that encloses or covers.

envelope

any enclosing structure, such as a membrane or skin. In bacteria, it is the part of the cell enclosing the cytoplasm, i.e. the cytoplasmic membrane cell wall and capsule. In VIRUSES, it is the outer lipid-containing layer of some virions.

en·ve·lope

(en'vĕ-lōp)
In anatomy, a structure that encloses or covers.
References in periodicals archive ?
With you as the pilot, you'd like to experience at least three favorable outcomes: (1) operating your machine in an efficient manner, (2) not constantly flying at the edge of the envelope, and (3) always having a soft landing!
"That means planning and thinking about the future, about building systems that push the edge of the envelope, systems that make a difference.
Sometimes you just have to push the edge of the envelope, go for it, unleash the beast that lurks within and wear something or do something that says "I take no prisoners".

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