Literal translation of Aṣṭasāhasrikā Prajñāpāramitā Sūtra

What is the literal meaning of Aṣṭasāhasrikā Prajñāpāramitā Sūtra. Everywhere I read it says "The Perfection of Wisdom in 8000 Lines", but that is not a _literal_ translation as far as I can tell. What is the literal translation or etymology? For example, [Sutra](https://en.wikipedia.org/wiki/Sutra) means "thread", but that is no where in that perfection of wisdom phrase. I read elsewhere, too, that: > The word Prajñāpāramitā combines the Sanskrit words prajñā "wisdom" with pāramitā "perfection". So we have the "wisdom perfecting thread" sort of thing. But what is the other word?