gli·o·ma \glīˈōmə\noun (pluralgliomas \-məz\ ; orglioma·ta \-məd.ə\) Etymology: New Latin, from Middle Greek glia glue + New Latin -oma — more at clay : a tumor arising from neuroglia • gli·o·ma·to·sis\(ˌ)glīˌōməˈtōsə̇s\nounplural gliomato.ses \-ōˌsēz\ • gli·oma·tous\(ˈ)glī|äməd.əs, -|ōm-\adjective