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nuclear envelope

American  
[noo-klee-er en-vuh-lohp] / ˈnu kli ər ˈɛn vəˌloʊp /

noun

plural

nuclear envelopes
  1. Cell Biology. nuclear membrane.


nuclear envelope Scientific  
  1. The double-layered membrane enclosing the nucleus of a eukaryotic cell. The nuclear envelope has pores that allow the passage of materials into and out of the nucleus.

  2. Also called nuclear membrane


Other Word Forms

  • nuclear-envelope adjective

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

They observed that progerin, which first appears near the nuclear envelope, can move into the cell's cytoplasm through a process called nuclear envelope budding.

From Science Daily • Nov. 7, 2025

During cell division -- mitosis -- the membrane that protects the cell's nucleus, the nuclear envelope, breaks down and cGAS quickly relocates into the nucleus.

From Science Daily • Feb. 28, 2024

Its nuclear envelope prevents unwanted proteins or harmful viruses from entering the nucleus and macromolecules from an uncontrolled escape.

From Science Daily • Jan. 25, 2024

"It looks like only chromosomal DNA is deemed 'good enough' to be encased within a fully formed nuclear envelope, and extra-chromosomal DNA is not," Kroschewski says.

From Science Daily • Oct. 2, 2023

The nuclear envelope starts to break into small vesicles, and the Golgi apparatus and endoplasmic reticulum fragment and disperse to the periphery of the cell.

From Textbooks • Apr. 25, 2013