fra·gil·o·cy·to·sis \frəˌjilō(ˌ)sīˈtōsə̇s\noun (pluralfragilocyto·ses \-ˈtōˌsēz\) Etymology: New Latin, from International Scientific Vocabulary fragilocyte + New Latin -osis : an abnormal state characterized by the presence of fragilocytes in the blood