Ad. -at suf. “dual suffix” (Category: Noun Inflection)
The suffix for dual nouns in Adûnaic, with the a lengthened to â in subjective duals (SD/428-430). In later (Exilic?) Adûnaic, the â was long in all cases (SD/431). See the entry on dual nouns for further details. Carl Hostetter and Patrick Wynne suggested (AAD/11) that -at is derived from the same Primitive Elvish form ✶-ata as the Quenya dual.
References ✧ SD/428-429, 431
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