mesosome

M3E1S1O1S1O1M3E1

noun

A folded invagination in the plasma membrane of bacteria, produced by the chemical fixation techniques used to prepare samples for electron microscopy, but previously thought to be part of the normal structure of the cell.

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Meanings

nounmesosome (plural mesosomes)

plural mesosomes

  1. A folded invagination in the plasma membrane of bacteria, produced by the chemical fixation techniques used to prepare samples for electron microscopy, but previously thought to be part of the normal structure of the cell.
adjectivemesosome (comparative more mesosome, superlative most mesosome)

comparative more mesosome · superlative most mesosome

  1. Average-bodied; neither broad nor narrow in proportion to height or length.

Origin

From meso- + -some.

Full word history & related roots →
Cite this entry
APA

mesosome. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/mesosome

MLA

“mesosome.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mesosome. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “mesosome,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/mesosome.

Source: mesosome on Wiktionary, CC BY-SA 4.0.