Study of language and its structure (11)
I believe the answer is:
linguistics
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">study of language and its structure</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for linguistics that I've seen before include "Study of language and its structure" , "Study of languages" , "Scientific study of language" , "Study of grammar, syntax and phonetics" .)