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.
References in classic literature ?
Of these he took five and thrust them into an envelope.
That the direction about the drawer, the colour of ink, the colour of envelope, should none of them be right by accident, that can't be a coincidence.
He held a thick envelope between his finger and thumb, as if the notice from the opera company had become in some way inseparably attached to it.
A few weeks ago," he remarked, "I had a visit from the lady whose handwriting is upon that envelope.
Robert returned, and waited near his mistress, with the directed envelope in his hand.
Lady Lydiard dropped the unclosed envelope on the table, and ran--yes, short as she was and fat as she was, ran--into the inner room.
Fentolin slit the envelope and withdrew the single sheet of paper which it contained.
Sabin thrust the letter and envelope into his breast coat pocket.
Your native shrewdness, my dear Watson, that innate cunning which is the delight of your friends, would surely prevent you from inclosing cipher and message in the same envelope.
The same writing," remarked Holmes, as he opened the envelope, "and actually signed," he added in an exultant voice as he unfolded the epistle.
He came to me quite unexpectedly after I had actually addressed this envelope with the intention of sending you the key to the cipher.
Instead of that, he had intended, before his plans were nipped, to send me the clue in this envelope.