“Symbols of divine truth were not invented for the amusement of the ignorant;
they are the alpha and omega of philosophic thought.”—H.P.B.
मण्डल maṇḍala: circle, disc | ritual diagram | lit. one of the 10 divisions of the Rig Veda, grouped into hymns.—Sanskrit Heritage Dictionary
Mandala (Sk.). A circle; also the ten divisions of the Vedas.—Theosophical Glossary
Mandala (Sanskrit) Maṇḍala A circle, ball, wheel, ring, or circumference, as the orbit of a heavenly body, and hence a great circle in astronomy, an orb. Also one of the ten mandalas (circles, divisions) of the Rig-Veda Samhita. Also the sacred circular pictures in Buddhist art.—Encyclopedic Theosophical Glossary
Mandala, Hermes Magazine
Symbolism of the Mandala, Buddhist Art & Architecture