Definition of Macro-Siouan in English:

Macro-Siouan

Syllabification: Mac·ro-Siou·an
Pronunciation: /ˌmakrōˈso͞oən/

Entry from US English dictionary

noun

A proposed phylum of North American languages including the Siouan, Iroquoian, and Caddoan families and some others.

adjective

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Relating to the Macro-Siouan language phylum.

Definition of Macro-Siouan in:

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Word of the day hubris
Pronunciation: ˈhjuːbrɪs
noun
excessive pride or self-confidence