What is Et Seq.?

Legal Definition
"And the following things". Abbreviation of et sequens , meaning "and the following ones". Used in citations to indicate that the cited portion extends to the pages following the cited page.
Legal Definition
An abbreviation for et sequentia , "and the following." Thus a reference to "p. 1, et seq." means "page first and the following pages."
-- Black's Law Dictionary
Legal Definition
Et sequitur, and as follows. Et sic. And so.
-- Ballentine's Law Dictionary