adenoid vs adenoidal

adenoid

adj
  • Of or pertaining to the adenoids. 

  • Of or relating to lymphatic glands or lymphoid tissue. 

  • Relating to, affected with, or associated with abnormally enlarged adenoids. 

noun
  • an abnormally enlarged mass of lymphatic tissue at the back of the pharynx, often obstructing the nasal and ear passages and hindering speaking and breathing in young children. 

  • Such a mass when not abnormally enlarged, covered by ciliated epithelium and located in the roof and posterior wall of the nasopharynx at the back of the throat behind the uvula. 

adenoidal

adj
  • Of or pertaining to the adenoids. 

  • Sounding as if the speaker has swollen adenoids. 

How often have the words adenoid and adenoidal occurred in a corpus of books? (source: Google Ngram Viewer )