Webster’s Revised Unabridged Dictionary · 1913
Morintannic
Mo′rin·tan′nic (mō′rĭn·tăn′nĭk), a. [NL. Morus fustic + E. tannic.] (Chem.) Pertaining to, or designating, a variety of tannic acid extracted from fustic (Maclura, formerly Morus, tinctoria) as a yellow crystalline substance; — called also maclurin.