trigesimal
English
editEtymology
editFrom Latin trigesimus (“thirtieth”) + -al (“forming adjectives”).
Adjective
edittrigesimal (not comparable)
- (obsolete) Thirtieth.
- In the trigesimal year of his reign...
- (rare) Containing thirty of something.
- Each month is a roughly trigesimal period.
Noun
edittrigesimal (uncountable)
- The trigesimal number system; base 30.
References
edit- Oxford English Dictionary, "trigesimal, adj."