知乎 Traditional form: 知乎 Pinyin (reading): Zhīhū Definitions: Zhihu, Chinese Q&A website modeled on Quora, at zhihu.com, launched in Jan 2011 Characters: 知 - to know, to perceive, to comprehend 乎 - interrogative or exclamatory final particle Traditional characters: 知 - to know, to perceive, to comprehend 乎 - interrogative or exclamatory final particle