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nuclear membrane

The definition of a nuclear membrane is a double-layered lining that encloses a cell nucleus and allows certain molecules to pass through.

(noun)

An example of a nuclear membrane is inner and outer membrane of a cell.

See nuclear membrane in Webster's New World College Dictionary

the double-layered membrane of the nucleus of a cell, separating the nucleoplasm from the cytoplasm, that is permeable to certain molecules, esp. DNA, RNA, and ATP

now often nuclear envelope

See nuclear membrane in American Heritage Dictionary 4

noun

The double-layered membrane enclosing the nucleus of a cell. Also called nuclear envelope.

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