Series, order (8)
I believe the answer is:
sequence
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">series</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(sequence is a kind of series)</span><br/ ><br/ >'<span class="explanation-format__original">order</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(sequence is a kind of order)</span><br/ ><br/ ></span>
(Other definitions for sequence that I've seen before include "Series of things in order" , "Serial arrangement following a logical order or recurrent pattern" , "Arrangement in a certain order" , "Particular order (eg, of events)" , "(Of events) one thing after another" .)