-ātiō

-āt-iō lat.

By rebracketing of words formed from first conjugation verbs, such as accūsātiō (accūsāre + -tiō), where -ā- is part of the stem.

Pronunciation

• (Classical) IPA^(key): /ˈaː.ti.oː/, [ˈäːt̪ioː]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈat.t͡si.o/, [ˈät̪ː͡s̪io]

Suffix

-ātiō f

1. Form of -tiō appended to nouns

   ‎gradus + ‎-ātiō → ‎gradātiō

Declension

Third-declension noun.

Case	Singular	Plural
Nominative	-ātiō	-ātiōnēs
Genitive	-ātiōnis	-ātiōnum
Dative	-ātiōnī	-ātiōnibus
Accusative	-ātiōnem	-ātiōnēs
Ablative	-ātiōne	-ātiōnibus
Vocative	-ātiō	-ātiōnēs