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From tertius (third) +‎ , from trēs (three).



tertiō (present infinitive tertiāre, perfect active tertiāvī, supine tertiātum); first conjugation

  1. (transitive) I do for the third time, thrice.


   Conjugation of tertio (first conjugation)
indicative singular plural
first second third first second third
active present tertiō tertiās tertiat tertiāmus tertiātis tertiant
imperfect tertiābam tertiābās tertiābat tertiābāmus tertiābātis tertiābant
future tertiābō tertiābis tertiābit tertiābimus tertiābitis tertiābunt
perfect tertiāvī tertiāvistī tertiāvit tertiāvimus tertiāvistis tertiāvērunt, tertiāvēre
pluperfect tertiāveram tertiāverās tertiāverat tertiāverāmus tertiāverātis tertiāverant
future perfect tertiāverō tertiāveris tertiāverit tertiāverimus tertiāveritis tertiāverint
passive present tertior tertiāris, tertiāre tertiātur tertiāmur tertiāminī tertiantur
imperfect tertiābar tertiābāris, tertiābāre tertiābātur tertiābāmur tertiābāminī tertiābantur
future tertiābor tertiāberis, tertiābere tertiābitur tertiābimur tertiābiminī tertiābuntur
perfect tertiātus + present active indicative of sum
pluperfect tertiātus + imperfect active indicative of sum
future perfect tertiātus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present tertiem tertiēs tertiet tertiēmus tertiētis tertient
imperfect tertiārem tertiārēs tertiāret tertiārēmus tertiārētis tertiārent
perfect tertiāverim tertiāverīs tertiāverit tertiāverīmus tertiāverītis tertiāverint
pluperfect tertiāvissem tertiāvissēs tertiāvisset tertiāvissēmus tertiāvissētis tertiāvissent
passive present tertier tertiēris, tertiēre tertiētur tertiēmur tertiēminī tertientur
imperfect tertiārer tertiārēris, tertiārēre tertiārētur tertiārēmur tertiārēminī tertiārentur
perfect tertiātus + present active subjunctive of sum
pluperfect tertiātus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present tertiā tertiāte
future tertiātō tertiātō tertiātōte tertiantō
passive present tertiāre tertiāminī
future tertiātor tertiātor tertiantor
non-finite forms active passive
present perfect future present perfect future
infinitives tertiāre tertiāvisse tertiātūrus esse tertiārī tertiātus esse tertiātum īrī
participles tertiāns tertiātūrus tertiātus tertiandus
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
tertiāre tertiandī tertiandō tertiandum tertiātum tertiātū

Derived terms[edit]



tertiō (not comparable)

  1. for the third time
  2. in the third place, thirdly
  3. three times, thrice



  1. dative masculine singular of tertius
  2. dative neuter singular of tertius
  3. ablative masculine singular of tertius
  4. ablative neuter singular of tertius


  • tertio in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • tertio in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • tertio in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette