1. Being in the middle; running through the middle; as, a median groove.
2. (Zoöl.)
Defn: 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. 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.
MEDIAN
Me"di*an, n. (Geom.)
Defn: A median line or point.
MEDIANT Me"di*ant, n. Etym: [L. medians, p. p. of mediare to halve: cf. It. mediante, F. médiante.] (Mus.)
Defn: The third above the keynote; — so called because it divides the interval between the tonic and dominant into two thirds.
MEDIASTINAL
Me`di*as*ti"nal, a. (Anat.)
Defn: Of or pertaining to a mediastinum.
MEDIASTINE; MEDIASTINUM Me`di*as"tine, Me`di*as*ti"num, n. Etym: [NL. mediastinum, fr. L. medius middle; cf. mediastinus helper, a menial servant, LL. mediastinus equiv. to medius: cf F. médiastin.] (Anat.)