The York Cycle has been chosen as the corpus for a semantic study of in-prepositional phrases. The text belongs to a linguistic period in which the presence of in-phs had already increased. The total number of instances amounts to 1,420, which have been classified according to the semantic criteria of the MED. Taking into account the different semantic fields of the MED, the samples have been ascribed to three main distinct categories: spatial, temporal, and figurative. Generally speaking, the analysis will show a slight predominance of the figurative sense (52.81%) over the spatial sense (45.21%). Likewise, it will also emphasize the extremely low frequency of in-phs with a temporal meaning (1.97%). In addition, it will also account...