title: List of medical synonyms for information retrieval, elastic search
body: <p>I am looking for a list of medical synonyms to use at token filter stage in elastic search (it will read a synonyms.txt file) basically equivalent to this one in emerse search engine:</p>
  <p><a href="https://project-emerse.org/synonyms.html" rel="nofollow noreferrer">https://project-emerse.org/synonyms.html</a></p>
  <p>However the $2500 annual licencing for academic purposes is beyond my means ( I am conducting a 16 week MSc research project).</p>
  <p>Are there more affordable/free sources of such lists?</p>