mesosome

== English == === Etymology === From meso- +‎ -some. === Noun === mesosome (plural mesosomes) 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. ==== Derived terms ==== === Adjective === mesosome (comparative more mesosome, superlative most mesosome) Average-bodied; neither broad nor narrow in proportion to height or length. ==== Coordinate terms ==== eurysome leptosome