from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. One who believes that all space is full of matter.

from the GNU version of the Collaborative International Dictionary of English

  • n. One who holds that all space is full of matter.

from The Century Dictionary and Cyclopedia

  • n. One who maintains that all space is full of matter; one who denies the possibility of a vacuum or the reality of empty space.


Latin plenus full; compare French pléniste. (Wiktionary)


  • Gassendi's notion of non-relative space stands in direct contrast to the Cartesian plenist account, which suggests that space just is place, as defined by the extension of the resident (and universal) matter.

    Pierre Gassendi

  • All the mechanical phi - losophers — the atomists Hobbes and Gassendi as well as the plenist Descartes — recognized that they pos - sessed no workable method of directly observing nature at the micro-level, and thus were prevented from gaining real knowledge of the atomic clockwork which to them doubtless existed.

    Dictionary of the History of Ideas

  • Strictly speaking, therefore, Descartes was not an atomist but a vorticist and plenist.

    Dictionary of the History of Ideas

  • It was the 1640's that marked the flowering of atom - ism and of Cartesianism, its plenist partner in mecha - nism.

    Dictionary of the History of Ideas

  • a plenist, rejecting the intelligibility of a vacuum.

    Spinoza's Physical Theory

  • While Descartes had provided an epistemology for his plenist version, there was nothing comparable for the atomist version associated with Gassendi and Boyle until Locke supplied it (McCann 2002, pp. 354 “ 355).

    Locke's Philosophy of Science


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