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ground substance

American  

noun

Biology.

  1. Also called matrix.  the homogeneous substance in which the fibers and cells of connective tissue are embedded.

  2. Also called hyaloplasm.  the clear portion of the cell cytoplasm; cytosol.

ground substance Scientific  

  1. The intercellular material in which the cells and fibers of connective tissue are embedded, composed largely of glycosaminoglycans, metabolites, water, and ions.

  2. The clear, fluid portion of cytoplasm as distinguished from the organelles and other cell components.

Etymology

Origin of ground substance

First recorded in 1880–85

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.