plastosome

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noun

Any of various organelles found within a cell, especially a mitochondrion.

Scrabble 14

Meanings

nounplastosome (plural plastosomes)

plural plastosomes

  1. obsoleteAny of various organelles found within a cell, especially a mitochondrion.

    The plastosome itself sometimes survives the growth period as a unit, though often it does not.

    1914, Contributions from the Zoological Laboratory - Volume 19, page 436
    4 more examples

    Just as a nucleus has always for its genesis a division of a mother-nucleus, so have the plastosomes for their origin a division of a mother-plastosome.

    1916, Journal of Morphology, page 561

    These granules later (early spermatocytes) disappear from the nucleus simultaneously with the disappearance of the plastosome.

    1917, Proceedings of the American Academy of Arts and Sciences, page 258

    The shape of the plastonema and its relation to the plastosome appear clearly in figures 1, 2, and 3.

    1930, Proceedings of the National Academy of Sciences of the United States of America, page 537

    The proplastid of I. howellii is a flattened structure that is differentiated into a plastonema and a plastosome. Lamellae and starch granules appear first in the plastonema and later in the plastosome.

    1961, University of California, Davis, Summaries of Dissertations Submitted in Partial Satisfaction of the Requirements for the Degree of Doctor of Philosophy

Origin

Cite this entry
APA

plastosome. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/plastosome

MLA

“plastosome.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/plastosome. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “plastosome,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/plastosome.

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