[ ˌnɒktɪ'lu:s(ə)nt ]
■ noun a high, luminous cloud seen at night, especially in summer in high latitudes.
Origin
C19: from L. nox , noct- 'night' + lucere 'to shine' + -ent .
[ ˌnɒktɪ'lu:s(ə)nt ]
■ noun a high, luminous cloud seen at night, especially in summer in high latitudes.
Origin
C19: from L. nox , noct- 'night' + lucere 'to shine' + -ent .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004