[mod. f. Gr. ἀποτιθέ-ναι to set off, put aside, deposit, etc.; after θέμα, from the simple τιθέναι to place; cf. Fr. apothème.]
1. Math. In a regular polygon: The perpendicular dropped from the center upon one of the sides. Cf. off-set. (In mod. Dicts.)
2. ‘A term applied by Berzelius to the insoluble brown deposit which forms in vegetable extracts … exposed to the air.’ Watts, Dict. Chem.
