lèi​fēng​shī​yīn​zǐ

rheumatoid factor

  1. lèi adjective
    to resemble
    (bound form) to resemble; to be similar to; to be like
  2. rheumatism
    Joint or muscle pain and inflammation often associated with cold or damp environments; in Chinese medicine, refers to illness caused by the invasion of wind and dampness.
  3. factor (general)
    an element or circumstance that contributes to a result; also used in biology to refer to a genetic trait or substance