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

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now