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quaternate

[kwot-er-neyt, kwuh-tur-nit] / ˈkwɒt ərˌneɪt, kwəˈtɜr nɪt /
ADJECTIVE
four
Synonyms
STRONG
quadruple quadruplicate quaternary tetrad
WEAK
quadrigeminal quadripartite quadrivial

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.