We found one dictionary that defines the word outportion:

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1. outportion: Wiktionary

Definitions from Wiktionary (outportion) ▸ noun:  An outer portion. ▸ Words similar to outportion ▸ Usage examples for outportion ▸ Idioms related to outportion ▸ Wikipedia articles (New!) ▸ Popular adjectives describing outportion ▸ Words that often appear near outportion ▸ Rhymes of outportion ▸ Invented words related to outportion