midpoint

or mid-point

[ mid-point ]
/ ˈmɪdˌpɔɪnt /

noun

a point at or near the middle of, or equidistant from, both ends, as of a line: the midpoint of a boundary.
a point in time halfway between the beginning and the end, as of a process, event, or situation: the midpoint of the negotiations.
Geometry. the point on a line segment or an arc that is equidistant, when measured along the line or the arc, from both endpoints.
Statistics. median(def 3).
Astrology. the point on the arc that is equidistant from two planets: regarded as a sensitive point and used in horoscopic interpretations.

Origin of midpoint

1325–75; Middle English. See mid-, point
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for midpoint

British Dictionary definitions for midpoint

midpoint

/ (ˈmɪdˌpɔɪnt) /

noun

the point on a line that is at an equal distance from either end
a point in time halfway between the beginning and end of an event

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012