trigesimal

T1R1I1G2E1S1I1M3A1L1

adjective

Thirtieth.

“In the trigesimal year of his reign...”

OriginLatin trigesimus →
Scrabble 13
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Meanings

adjectivetrigesimal (not comparable)
  1. not comparableobsoleteThirtieth.

    In the trigesimal year of his reign...

  2. not comparablerareContaining thirty of something.

    Each month is a roughly trigesimal period.

nountrigesimal (uncountable)
  1. uncountableThe trigesimal number system; base 30.

Synonyms & antonyms

Also see
thirtieth

Origin

  1. Latintrigesimus“thirtieth”
  2. Englishtrigesimal

From Latin trigesimus (“thirtieth”) + -al (“forming adjectives”).

More words from Latin

Full word history & related roots →
Cite this entry
APA

trigesimal. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/trigesimal

MLA

“trigesimal.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/trigesimal. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “trigesimal,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/trigesimal.

Source: trigesimal on Wiktionary, CC BY-SA 4.0.