quinquantième
Quinquantième is a French term that denotes an ordinal related to the number five. In modern standard French, the ordinary form for the fifth is cinquième, and quinquantième is rarely used outside historical, literary, or technical contexts. When it appears, it is typically regarded as archaic or stylistic rather than a regular synonym of cinquième.
Etymology and form: the word is built from the element meaning five, combined with the ordinal suffix
Usage and examples: quinquantième can be encountered in dictionaries of historical French, in philological or paleographic
Relation to related terms: quinquennal or quinquennal refers to a five-year period, illustrating a related but