The aim of this paper is to interpret the analysis of “coming to be” in Aristotle’s Physics I 7 and to insist on its key role in the problematic posed in the previous chapters. For this, the mentioned analysis is succinctly contextualized within this first book and later described in the form of three different approaches: pragmatics, syntax, and semantics of the term. The language of coming to be opens the way for its ontological characterization, which is translated into constitutive moments of what comes to be. Obtaining the ontology of coming to be enables Aristotle to resume the question about the foundations of natural beings and to answer it under a hylomorphic scheme.