Wh-movement
Origin
Most English interrogative words start with wh-, for example, who, whom, whose, what, which, when, where, why, etc. (though how is an exception).
Full definition of wh-movement
Noun
wh-movement
(uncountable)- (syntax) a syntactic phenomenon found in many languages around the world, in which interrogative words (sometimes called wh-words) or phrases show a special word order. Unlike ordinary phrases, such wh-words appear at the beginning of an interrogative clause.