vacuist

noun

vac·​u·​ist

-yəwə̇st

plural -s

: one who maintains that there are vacuums in nature

by 1660 learned men were lining up on two opposing sides, the vacuists and the plenists

—American Scientist

compare plenist

Word History

Etymology

New Latin vacuista, from Latin vacuum + -ista -ist

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