c. [adverb] - abbreviation for et cetera (= and other similar things). It is used, esp. in writing, after a list.We saw lions, tigers, elephants, etc.Put this one here, this one next to it, then another one, etc., etc. (= and so on).
ET
Meaning of ET in English
Cambridge English vocab. Кембриджский английский словарь. 2012