We found one dictionary that defines the word almost-perfect number:

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1. almost-perfect number: Encyclopedia

▸ Words similar to almost-perfect number ▸ Usage examples for almost-perfect number ▸ Idioms related to almost-perfect number ▸ Wikipedia articles (New!) ▸ Words that often appear near almost-perfect number ▸ Rhymes of almost-perfect number ▸ Invented words related to almost-perfect number