interrogative
IntNC
1) a grammatical form of sentence used principally to ask a question but often also to make a request, ¶3-3-5, ¶3-5-4; the i. sentence opposes declarative and imperative sentences and may be phrased as either affirmative or negative and as either a yes-no or a wh-i. sentence; also a semantic feature characterizing a quotative noun clause as an embedded i. sentence
2) a noun clause whose most felicitous paraphrase is as a question — interrogative in form, ¶6-3-2, §13-1; an i. noun clause may be either a yes/no interrogative or a wh-interrogative noun clause