The Collaborative International Dictionary
Monosymmetrical
Monosymmetric \Mon`o*sym*met"ric\, Monosymmetrical \Mon`o*sym*met"ric*al\, a. [Mono- + symmetric, -ical.] (Crystallog.) Same as Monoclinic.
Wiktionary
monosymmetrical
a. monosymmetric; monoclinic