Does the Catholic Church have an official definition of Easter/Paschal Season?

One of the precepts of the Catholic Church says :"You shall humbly receive your Creator in Holy Communion at least during the Easter season." At some places, the words **Paschal Season** replace the phrase for the **Easter Season**. There appears to be an absence of uniformity in the definition of the said Season. I wish to know if the Catholic Church has an official definition of Easter/Paschal Season. Does it cover the Feast of Corpus Christi, which is most closely associated with the Holy Communion, and which falls on the Sunday immediately following the Feast of the Holy Trinity?