ballean

Unknown. Perhaps a blend of ball +‎ Boolean.

ballean (plural balleans)

1. (mathematics) The asymptotical counterpart of a ball (inside surface of a sphere)
   • 2016, I.V. Protasov, K.D. Protasova, “The comb-like representations of cellular ordinal balleans”, in arXiv‎:

     We show that each cellular ordinal ballean can be represented as a ${\displaystyle \gamma -}$comb.

• Benalla, balneal