Background (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">background</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for context that I've seen before include "Frame of reference" , "Setting of discourse" , "Surrounding circumstances" , "Words surrounding a word or phrase that may fix its true meaning" , "relevant conditions" .)
(Other definitions for ambient that I've seen before include "Surrounding or encompassing, say temperature" , "Surrounding - mean bit (anag)" , "Of music, say, played at low volume to create atmosphere" , "relaxed atmosphere" , "to do with circulation" .)