An allative form of the preposition mi “in” and thus meaning “into”, appearing in notes associated with Quenya prayers of the 1950s (VT43/30).
Conceptual Development: The Etymologies of the 1930s had ᴹQ. minna “to the inside, into” under the root ᴹ√MI “inside” (Ety/MI).
mina prep. "into" (VT43:30); see minna