outmost

Farthest out; outermost.

superlative [⟨ out + –most.] Furthest outward; most remote from the middle; outermost. See utmost.

Farthest from the middle or interior; farthest outward; outermost.

Superlative form of out.

Farthest outside; as far from the center or inside as possible.

situated at the farthest possible point from a center