so that
so that {conj.}
1. or in order that; for the purpose that; so. — "So that" is usually followed by "can" or "could"; "in order that" is usually followed by "may" or "might".
Let's get ready now so that we can leave when Father comes.
Betty saved her money in order that she might buy a doll.
Compare: IN ORDER TO.
2. With the result that; so.
My pencil fell under my desk, so that I couldn't see it.
George often told stories that weren't true, so that no one believed him when he told about a deer in the school yard.
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Source: A Dictionary of American Idioms