Which of the following terms is no longer used in modern plumbing terminology for a sanitary fitting?

The term "Sanitary Tee" refers to a specific type of fitting used in plumbing to connect two pipes at an angle, typically at 90 degrees, allowing for the efficient drainage of waste. While the term may still be widely used in practice and by some professionals, it is considered somewhat outdated in modern plumbing terminology.

Current standards and practices have shifted toward using more standardized terminology that reflects the purpose and function of the fitting more clearly. The other terms listed, such as Wye fitting, Coupling, and Elbow, are still commonly used within the industry and do not have alternative modern replacements that are universally recognized.

In summary, the identification of "Sanitary Tee" as an outdated term highlights the evolution of plumbing language, even though professionals still understand its application and functionality. Understanding these shifts in terminology is essential for keeping up with the industry's best practices and standards.