Situated in the middle, in particular:
Mathematics a line that is the geometric mean (mean proportional) between two lines whose lengths are incommensurable, but the squares of which are commensurable (only with reference to or in translations of Euclid's work).
A position in the middle of a word.
A cadence in which the leading chord is inverted; (in plainsong and modal polyphony) a cadence which is not on the final of the mode.
A deposit between two conjoining glaciers.
A bundle of nerve fibres on each side of the brain, originating in the gracile and cuneate nuclei of the posterior column of the spinal cord and ascending to the ventral posterior nucleus of the thalamus.
A rounded process on the medial side of the distal end of the tibia, forming the prominence of the inner aspect of the ankle.