cell membrane


Definition of cell membrane 

: a membrane of a cell especially : plasma membrane

Examples of cell membrane in a Sentence

Recent Examples on the Web

Their cell membranes, for example, are made up of two different kinds of fatty molecules, known as lipids. Prachi Patel, Scientific American, "Engineered Microbe Shakes Up the Tree of Life," 13 July 2018 Larger, multicellular organisms—with multiple flagella—were better at sweeping water past their cell membranes to harvest oxygen. Elizabeth Pennisi, Science | AAAS, "The momentous transition to multicellular life may not have been so hard after all," 28 June 2018 Their cell membranes would be made of nitrogen, which could also enable them to survive frigid temperatures. John Wenz, Popular Mechanics, "Titan's Seas May Hide a Strange Form of Nitrogen-Based Life," 2 Mar. 2015 Along with GenX, the plant also makes Nafion, used in fuel-cell membranes. Ken Otterbourg, Fortune, "Teflon’s River of Fear," 24 May 2018 Weyand and her colleagues found that the abnormal T cells sprouted ruffles on their cell membranes that enabled them to penetrate deeper into tissues. Mitch Leslie, Science | AAAS, "To treat some diseases, researchers are putting immune cells on a diet," 29 Mar. 2018 Next, the sperm cell has to pick up speed to be able to fuse with the egg cell, and the sperm's cell membrane has to become more fluid. Carla Bleiker, USA TODAY, "NASA shoots human sperm into space," 12 Apr. 2018 Fats help build cell membranes, certain hormones, and connective tissues, among other things. Byron P. Lee, Woman's Day, "5 Ways You Can Use Coconut Oil to Lose Weight," 28 Dec. 2017 In this image the normal lipid (fat) deposits of the cells (their major component) have been removed, revealing the honeycomb structure of the cell membranes. Doug Criss, CNN, "5 things for March 28: North Korea & China, Sacramento, water park death, new organ," 28 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cell membrane.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of cell membrane

1840, in the meaning defined above

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Last Updated

29 Aug 2018

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Time Traveler for cell membrane

The first known use of cell membrane was in 1840

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More Definitions for cell membrane

cell membrane


Kids Definition of cell membrane

: the thin outside layer that surrounds the cytoplasm of a cell and controls the movement of materials into and out of the cell

cell membrane


Medical Definition of cell membrane 

: a membrane of a cell especially : plasma membrane

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