(n.) A solid bounded by twenty-four similar quadrilateral faces. It is a hemihedral form of the hexoctahedron.

amidships average central chromatinic chromosomal core diploid equatorial equidistant extranuclear halfway haploid heteronuclear homonuclear interior intermediary intermediate isonuclear mean medial median mediocre mediterranean medium mesial mezzo mid middle middlemost middling midland midmost midships midway nucleal nucleary nucleate nucleolar nucleolate nucleolated polyploid thermonuclear