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What does nycto- mean?

Nycto- is a combining form used like a prefix meaning “night.” It is used in some technical terms.Nycto- comes from the Greek ��ý��, meaning “night.” English’s own word night, in fact, shares an ancient root with the Greek ��ý��. Also related to ��ý�� is the Latin word for nox, source of the combining forms nocti- and noct-.What are variants of nycto-?When combined with words or word elements that begin with a vowel, nycto- becomes nyct-, as in nyctalgia.In some instances, particularly in terms from biology, nycto- becomes nycti-, as in nyctitropic.