Final answer:
The adenoids, also known as the pharyngeal tonsils, are lymphoid tissues located at the top of the nasopharynx and are commonly removed to reduce snoring.
Step-by-step explanation:
People who have their adenoids removed to cut down on snoring are having their pharyngeal tonsils removed. The pharyngeal tonsil, also known as an adenoid, is a collection of lymphoid reticular tissue similar to a lymph node and is located at the superior portion of the nasopharynx. It has a role in the immune system, containing a supply of lymphocytes and is covered with ciliated epithelium that helps trap and destroy pathogens. These structures are particularly large in children and are known to regress with age.