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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
en·ve·lope
(en'vĕ-lōp), Avoid the mispronunciation ahn'vĕ-lōp.In anatomy, a structure that encloses or covers.
Farlex Partner Medical Dictionary © Farlex 2012
envelope
(ĕn′və-lōp′, ŏn′-)n.
Biology An enclosing structure or cover, such as a membrane or the outer coat of a virus.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
en·ve·lope
(en'vĕ-lōp)anatomy Any structure that encloses or covers.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
en·ve·lope
(en'vĕ-lōp)In anatomy, a structure that encloses or covers.
Medical Dictionary for the Dental Professions © Farlex 2012