D defs.my
Entry 1 sense Webster, 1913

Vacuist

· Vac·u·ist · IPA
01 n. One who holds the doctrine that the space between the bodies of the universe, or the molecules and atoms of matter, is a vacuum; -- opposed…
  1. 1.
    One who holds the doctrine that the space between the bodies of the universe, or the molecules and atoms of matter, is a vacuum; -- opposed to plenist.