VEXILLOLOGY Meaning of VEXILLOLOGY in English [ ˌvɛksɪ'lɒlədʒi ]■ noun the study of flags.Derivativesvexillological adjectivevexillologist noun Origin1950s: from L. vexillum 'flag' + -logy . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004