— allanitic /al'euh nit"ik/ , adj.
/al"euh nuyt'/ , n. Mineral.
a member of the epidote group, a silicate of calcium, cerium, aluminum, and iron, occurring chiefly in brown-to-black masses or prismatic crystals.
[ 1835-45; named after Thomas Allan (1777-1833), English mineralogist; see -ITE 1 ]