nuclear envelope

(redirected from Nucleolemma)
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Related to Nucleolemma: Perinuclear

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.

nu·cle·ar en·ve·lope

the double membrane at the boundary of the nucleoplasm; it has regularly spaced pores covered by a disclike nuclear pore complex and a space or cisterna about 150 Ǻ wide between the two membranes; the outer membrane is continuous at intervals with the rough endoplasmic reticulum.
Farlex Partner Medical Dictionary © Farlex 2012

nuclear envelope

The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

nu·cle·ar en·vel·ope

(nū'klē-ăr en'vĕ-lōp)
The double membrane at the boundary of the nucleoplasm; it has regularly spaced pores covered by a disclike nuclear pore complex and a space or cisterna about 150 Å wide between the two layers; the outer membrane is continuous at intervals with the endoplasmic reticulum.
Synonym(s): nuclear membrane.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

nuclear envelope

The double membrane, with perforations (pores), surrounding a cell nucleus. The outer membrane extends into the endoplasmic reticulum. The pores allow transport of macromolecules in both directions.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005