1909. epi
1909 epí (a preposition) – properly,
on (
upon), implying what "
fits" given the "
apt contact," building
on the verbal idea.
1909 /epí ("upon") naturally looks to the response (effect) that goes with the envisioned
contact, i.e. its apt result ("spin-offs," effects). The precise nuance of
1909 (
epí) is only determined by the
context, and by the
grammatical case following it – i.e.
genitive,
dative, or
accusative case.