n. [L. ultra, beyond; struere, to construct]
The fine structure of cells seen with an ultramicroscope or an electron microscope.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • ultrastructure — ● ultrastructure nom féminin Structure de cellules ou de tissus observés au microscope électronique. ultrastructure [yltʀastʀyktyʀ] n. f. ÉTYM. Mil. XXe; de ultra (microscopique), et structure. ❖ ♦ Biol. Structure cellula …   Encyclopédie Universelle

  • Ultrastructure — (or ultra structure) is the detailed structure of a biological specimen, such as a cell, tissue, or organ, that can be observed by electron microscopy. It refers in general to the study of cellular structures that are too small to be seen with an …   Wikipedia

  • ultrastructure — [ul′trəstruk΄chər] n. the minute, elemental structure of protoplasm that can be seen only with an electron microscope ultrastructural adj …   English World dictionary

  • Ultrastructure — Un exemple d ultrastructure avec la bactérie catalase positive, Bacillus subtilis. L ultrastructure concerne un domaine de dimensions qui se situe entre le domaine atomique moléculaire et le domaine accessible au microscope optique. Le microscope …   Wikipédia en Français

  • ultrastructure — noun Date: 1939 biological structure and especially fine structure (as of a cell) not visible through an ordinary microscope • ultrastructural adjective • ultrastructurally adverb …   New Collegiate Dictionary

  • ultrastructure — General term to describe the level of organization that is below the level of resolution of the light microscope. In practice, a shorthand term for ‘structure observed using the electron microscope’, although other techniques could give… …   Dictionary of molecular biology

  • ultrastructure — ultrastructural, adj. /ul treuh struk cheuhr/, n. Cell Biol. the structures of a cell that are revealed by electron microscopy. Also called fine structure. [1935 40; ULTRA + STRUCTURE] * * * …   Universalium

  • ultrastructure — noun The fine, detailed structure of a biological specimen that can only be observed by electron microscopy See Also: superstructure, hyperstructure, substructure, infrastructure …   Wiktionary

  • ultrastructure — Structures or particles seen with the electron microscope. SYN: fine structure. * * * ul·tra·struc·ture əl trə .strək chər n biological structure and esp. fine structure (as of a cell) not visible through a light microscope ul·tra·struc·tur·al… …   Medical dictionary

  • ultrastructure — n. elemental physicochemical structure of protoplasm …   English contemporary dictionary

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