Adjective
Somewhat regular; occasional.
(topology, of a topological space) Whose regular open sets form a base.
(geometry, of a polyhedron or tessellation of the plane) Uniform (isogonal and isotoxal) with regular faces of two or more types, such that each vertex is surrounded by the same polygons in the same order.
Source: en.wiktionary.orgAnita: My life works for me right now, but it wouldn't work for a child. Ronnie: Why, because you don't have a husband? Anita: No, because people try to kill me on a semiregular basis. Laurell K. Hamilton
Names This set can be called the regular and semiregular honeycombs. Source: Internet
Some definitions of semiregular polyhedron include one more figure, the elongated square gyrobicupola or "pseudo-rhombicuboctahedron". Source: Internet