v. t. [ imp. & p. p. Interrogating ] [ L. interrogatus, p. p. of interrogare to ask; inter between + rogare to ask. See Rogation. ] To question formally; to question; to examine by asking questions; as, to interrogate a witness. [ 1913 Webster ]

Wilt thou, uncalled, interrogate,
Talker! the unreplying Fate? Emerson.

Syn. -- To question; ask. See Question. [ 1913 Webster ]

v. i. To ask questions. Bacon. [ 1913 Webster ]

n. An interrogation; a question. [ Obs. ] Bp. Hall. [ 1913 Webster ]

n. One who is interrogated. [ 1913 Webster ]

n. [ L. interrogatio: cf. F. interrogation. ] [ 1913 Webster ]

1. The act or process of interrogating or questioning; examination by questions; an instance of interrogating; inquiry. [ 1913 Webster ]

2. A question put; an inquiry. [ 1913 Webster ]

3. A point, mark, or sign, thus [ ? ], indicating that the sentence with which it is connected is a question. It is used to express doubt, or to mark a query. Usually called a question mark; called also interrogation point. [ 1913 Webster +PJC ]

☞ In works printed in the Spanish language this mark is not only placed at the end of an interrogative sentence, but is also placed, inverted [ as thus (¿) ], at the beginning. [ 1913 Webster ]

a. [ L. interrogativus: cf. F. interrogatif. ] Denoting a question; expressed in the form of a question; as, an interrogative sentence; an interrogative pronoun. [ 1913 Webster ]

n. (Gram.) A word used in asking questions; as, who? which? why? [ 1913 Webster ]

adv. In the form of, or by means of, a question; in an interrogative manner. [ 1913 Webster ]

n. [ L.: cf. F. interrogateur. ] One who asks questions; a questioner. [ 1913 Webster ]

a. [ L. interrogatorius. ] Containing, expressing, or implying a question; as, an interrogatory sentence. [ 1913 Webster ]