ly·so·some | \ˈlī-sə-ˌsōm \

Definition of lysosome 

: a saclike cellular organelle that contains various hydrolytic enzymes — see cell illustration

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Other Words from lysosome

lysosomal \ˌlī-sə-ˈsō-məl \ adjective

Examples of lysosome in a Sentence

Recent Examples on the Web

Our cells have many compartments — lysosomes for breaking down food molecules, for example, and the endoplasmic reticulum for moving proteins around the cell. Carl Zimmer, STAT, "Shot through with microbes: How our bodies adapt to a hidden world of bacteria," 30 May 2018 Their lysosomes don’t make enough of an enzyme that helps create and sustain the protective coating around nerve fibers. Amy Dickinson,, "How Illinois bureaucracy robbed parents of a chance to save their children from a deadly disease," 4 Oct. 2017 Next, the drug company had to find a way to get that enzyme to the lysosome using sugars that facilitated movement. Vikki Ortiz Healy,, "Parents’ crusade against deadly Batten disease brings hope, heartbreak," 7 July 2017 In those with Batten, a defect occurs in the lysosomes, cell organelles that remove cell waste. Cindy Sutter, The Denver Post, "Family’s struggle with Batten disease mirrors the journey of others fighting rare diseases," 20 Jan. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lysosome.' 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 lysosome

1955, in the meaning defined above

History and Etymology for lysosome

International Scientific Vocabulary lys- + -some entry 3

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Time Traveler for lysosome

The first known use of lysosome was in 1955

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More Definitions for lysosome


ly·so·some | \ˈlī-sə-ˌsōm\

Kids Definition of lysosome

: a tiny saclike part in a cell that contains enzymes which can break down materials (as food particles and waste)


ly·so·some | \ˈlī-sə-ˌsōm \

Medical Definition of lysosome 

: a saclike cellular organelle that contains various hydrolytic enzymes

Other Words from lysosome

lysosomal \ˌlī-sə-ˈsō-məl \ adjective
lysosomally \-mə-lē \ adverb

More from Merriam-Webster on lysosome Encyclopedia article about lysosome

Comments on lysosome

What made you want to look up lysosome? Please tell us where you read or heard it (including the quote, if possible).


to reject or criticize sharply

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