cominuscule

From co- +‎ minuscule.

cominuscule (not comparable)

1. (mathematics) Pertaining to an associated simple root that occurs with coefficient 1 in the highest root of a subgroup.
   • 2015, J. Gutt, S. Charzyński, M. Kuś, “Wei-Norman equations for classical groups via cominuscule induction”, in Differential Geometry and its Applications‎^[1], volume 42:

     We show how to reduce the nonlinear Wei-Norman equations, expressing the solution of a linear system of non-autonomous equations on a Lie algebra, to a hierarchy of matrix Riccati equations using the cominuscule induction.