The Translative case reference article from the English Wikipedia on 24-Apr-2004
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Translative case

Helping orphans the way you would do it
Cases
Abessive case
Ablative case
Absolutive case
Accusative case
Adessive case
Allative case
Comitative case
Dative case
Dedative case
Elative case
Ergative case
Essive case
Genitive case
Illative case
Inessive case
Instrumental case
Locative case
Nominative case
Oblique case
Partitive case
Possessive case
Postpositional case
Prepositional case
Prolative case
Terminative case
Translative case
Vocative case
Declension
List of cases

This declension (case) indicates a change in state of a noun, with the general sense of "becoming X" or "change to X".

In the Finnish language, this is the counterpart of the Essive case, with the basic meaning of a change of state. It is also used for expressing "in (a language)".