Plural of disuse; multiple instances or types of things that are no longer used or practiced.
From disuse + -es plural ending. While disuse is typically used as an uncountable noun, the plural form can exist to refer to multiple different instances of abandonment.
You rarely see 'disuses' in writing because we treat disuse as uncountable (like 'water'), but when it does appear as a plural, it emphasizes that abandonment can happen in many different ways across society.
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