Thesaurus / mid point
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLE SENTENCES FROM THE WEB

Mid point between the waist and the knees, this is again in my proportion to his height that I make that judgment.
WARREN COMMISSION (2 OF 26): HEARINGS VOL. II (OF 15)THE PRESIDENT'S COMMISSION ON THE ASSASSINATION OF PRESIDENT KENNEDY
The drifting thing was oval, perhaps some six feet long and three wide, the mid point rising in a curve from the water's edge.
STORM OVER WARLOCKANDRE NORTON