Tertia is the Latin word for "third". In ancient Roman the word often denoted a third daughter of a family.
People Aemilia Tertia (circa 230-163 BC), wife of Scipio Africanus Junia Tertia (circa 60 BC-22 AD), daughter of Servilia Caepionis Licinia Tertia, (1st century BC), wife of Gaius Marius the Younger Mucia Tertia (1st century BC), daughter of Quintus Mucius Scaevola A woman of the ancient Roman Tertia gens Tertia (actress), 1st-century BC actress
Other uses , a German cargo ship in service 1922-1924 Tertia (album), the second album by American band Caspian Tertia, a reference to refer to Edith, one of the three Liddell sisters, in Lewis Carroll's poem 'All in the golden afternoon...' Tertia, alternative name for the organ stop tierce
See also Tertulla (disambiguation), a diminutive