*Definition [#f4459ca5]
κ is a cardinality.
A topological space is said to be κ-orthocompact if every open cover with cardinality less than or equal to κ has an [[interior-preserving]] open refinement.
*Remark [#q494fb28]
-cf. [[orthocompact]]

*Reference [#f883b065]
N. Kemoto, Y. Yajima, ''Orthocompactness in infinite product spaces'', Proc. Amer. Math. Soc. Vol.120 No.2 (1994)