Thesaurus.com
Dictionary.com
Showing results for tetrad. Search instead for tetradrachm.
Definitions

tetrad

[te-trad] / ˈtɛ træd /
ADJECTIVE
four
Synonyms
STRONG
quadruple quadruplicate quaternary
WEAK
quadrigeminal quadripartite quadrivial quaternate
NOUN
four
Synonyms
STRONG
quadrivium quadrumvirate quadruple quadruplet quadruplets quartet quartette quaternary quaternion quaternity tetralogy
WEAK
quadrigeminal quadripartition

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