NIGRESCENT Meaning of NIGRESCENT in English [ nɪ'grɛs(ə)nt , nʌɪ- ]■ adjective rare blackish.Derivativesnigrescence noun OriginC18: from L. ~- , nigrescere 'grow black', from niger , nigr- 'black'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004