|1.||the dimension of time, which is necessary in addition to three spatial dimensions to specify fully the position and behaviour of a point or particle|
|2.||the concept in science fiction of a dimension in addition to three spatial dimensions, used to explain supernatural phenomena, events, etc|
|a fool or simpleton; ninny.|
|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|
|fourth dimension (fôrth) Pronunciation Key
Time regarded as a coordinate dimension. A fourth dimension is required by relativity theory, along with three spatial dimensions, to specify completely the location of any event.