ultrastructure
ul·tra·struc·ture
noun \ˈəl-trə-ˌstrək-chər\Definition of ULTRASTRUCTURE
: biological structure and especially fine structure (as of a cell) not visible through an ordinary microscope
— ul·tra·struc·tur·al \ˌəl-trə-ˈstrək-chə-rəl, -ˈstrək-shrəl\ adjective
— ul·tra·struc·tur·al·ly adverb
First Known Use of ULTRASTRUCTURE
1939
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