What is enter on? How to use in English

The origin of the phrase "enter on" can be traced back to Middle English, around the 14th century. At that time, the word "on" had a much broader meaning than it does today. It could be used as a preposition, a particle, and as an adverb to indicate motion or entry into a place or situation. Using "on" as a preposition, the phrase "enter on" was commonly used to mean "to begin to speak" or "to commence," in the context of debates, judicial proceedings, or other formal meetings. This usage can be seen in works from the time, such as Simon Fish's "The Arche ionace" (1490), which has the lines "The jeaste renounced, and entereth on the cause." In modern English, the prepositional use of "on" has become more restricted, and "enter" has evolved to indicate physical entry into a space or building. However, the use of "enter on" to mean "to commence" or "to begin" has persisted in certain contexts, such as academic theses or research papers, where it is still used as a way to denote the beginning of a discussion or argument. Overall, the history of "enter on" serves as a reminder of the evolution of the English language and the ways in which words and phrases can change their meanings over time.