Which term refers to the style or the way in which something is expressed?

The term that refers to the style or the way in which something is expressed is "phraseology." This concept encompasses the particular patterns of word choice, expression, and syntax that define how ideas are articulated in speech or writing. It is about the arrangement of words and phrases to create well-formed sentences, which can reflect nuances in tone, style, and clarity within communication.

In contrast to other options, phrasing typically pertains to the specific way in which a particular expression or idea is articulated, rather than a broader understanding of style. Phonetics focuses on the sounds of speech and how they are produced, not the manner of expression. Philosophy deals with fundamental questions about existence, knowledge, and ethics, which does not align with the concept of expression style. Thus, phraseology is the most accurate term when it comes to discussing the style in which something is expressed.