noun Date: 1939 biological structure and especially fine structure (as of a cell) not visible through an ordinary microscope, ultrastructural adjective ultrastructurally adverb
ULTRASTRUCTURE
Meaning of ULTRASTRUCTURE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012