from
The Collaborative International Dictionary of English v.0.48
Median \Me"di*an\ (m[=e]"d[i^]*an), a. [L. medianus, fr. medius
middle. See {Medial}.]
1. Being in the middle; running through the middle; as, a
median groove.
[1913 Webster]
2. (Zool.) Situated in the middle; lying in a plane dividing
a bilateral animal into right and left halves; -- said of
unpaired organs and parts; as, median coverts.
[1913 Webster]
{Median line}.
(a) (Anat.) Any line in the mesial plane; specif., either
of the lines in which the mesial plane meets the
surface of the body.
(b) (Geom.) The line drawn from an angle of a triangle to
the middle of the opposite side; any line having the
nature of a diameter.
{Median plane} (Anat.), the mesial plane.
{Median point} (Geom.), the point where the three median
lines of a triangle mutually intersect.
[1913 Webster]