Source: p 175, Introducing Philosophy for Canadians: A Text with Integrated Readings (2011 1 ed).
[...] "essentia involvit existentiam" [essence entails existence].
Wiktionary (and the Lewis & Charles Short entry cited thereunder) do not list 'entail'. I understand not the semantic shift, because decomposing 'involvō' into 'in' + ' 'volvō' reveals that
A involves B.
⟹ A rolls around/into/to/on B.
But for A to be able to roll about B in some manner, B must have existed before A.
So how can A be thought to entail B? If anything, B should entail A, because B precedes A.