Definition of "extracellular" [extracellular]

• Located or occurring outside a cell or cells: extracellular fluid. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The viral RNA challenge falls short because the genomes of such viruses do decay in extracellular environments."
• "Fluid inside your cells is called intracellular fluid and the fluid outside your cells is called extracellular fluid."
• "When researchers administered a protein enzyme called extracellular signal-related kinase or ERK, it appeared to suppress intestinal turmorigenesis in the mice, causing cancer proteins to degrade more rapidly and increasing the survival time of the mice."