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
/en·ve·lope/ (en´vĕ-lōp)1. an encompassing structure or membrane.
2. in virology the peplos, a coat surrounding the capsid and usually furnished at least partially by the host cell.
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.
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.
envelope
an encompassing structure or membrane. In virology, a bilayer lipoprotein membrane with glycoprotein spikes surrounding the nucleocapsid and usually furnished, at least partially, by the host cell. 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.