hemitropal
/hɛm.ɪˈtroʊ.pəl/Definitions
1. adjective
Relating to or resembling a hemitropes, especially in having a half-turn axis of symmetry.
“The hemitropal crystal structure was crucial to the development of new materials.”
2. noun
A crystal or solid having a half-turn axis of symmetry.
“The hemitropal object in the laboratory was studied for its unique properties.”