tertius

Latin

Etymology

From trēs (“three”), originally from Proto-Indo-European *tréyes.

Numeral

tertius m. (feminine tertia, neuter tertium); first/second declension (cardinal: trēs)

1. (ordinal) third, the ordinal number after secundus (“second”) and before quartus (“fourth”)

   • For examples of the usage of this term see the citations page.

Usage notes

• In poetical sense it is used for the Roman "Third World", that is the "Underworld", of Pluto

Inflection

Number	Singular				Plural
Case \ Gender	Masculine	Feminine	Neuter		Masculine	Feminine	Neuter
nominative	tertius	tertia	tertium		tertiī	tertiae	tertia
genitive	tertiī	tertiae	tertiī		tertiōrum	tertiārum	tertiōrum
dative	tertiō	tertiae	tertiō		tertiīs	tertiīs	tertiīs
accusative	tertium	tertiam	tertium		tertiōs	tertiās	tertia
ablative	tertiō	tertiā	tertiō		tertiīs	tertiīs	tertiīs
vocative	tertie	tertia	tertium		tertiī	tertiae	tertia

Derived terms

• tertiārius
• tertiō

Descendants

• French: tiers
• Italian: terzo
• Portuguese: terço, tércio
• Romanian: terț
• Spanish: tercio