[lahy-suh-sohm] /ˈlaɪ səˌsoʊm/

noun, Cell Biology.
a cell organelle containing enzymes that digest particles and that disintegrate the cell after its death.
any of numerous small particles, containing digestive enzymes, that are present in the cytoplasm of most cells

1955, from lyso- + -some (3).

lysosome ly·so·some (lī’sə-sōm’)
A membrane-bound organelle in the cytoplasm of most cells containing various hydrolytic enzymes that function in intracellular digestion.
ly’so·so’mal adj.
A cell organelle that is surrounded by a membrane, has an acidic interior, and contains hydrolytic enzymes that break down food molecules, especially proteins and other complex molecules. Lysosomes fuse with vacuoles to digest their contents. The digested material is then transported across the organelle’s membrane for use in or transport out of the cell. See more at cell.

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