共栖

共棲
gòngqī
(old) (biology) to have a commensal relationship with (another organism)

CEDICT

old biology

Entry Composition

1 共 gòng
  1. common
  2. general
  3. to share
  4. together
  5. total
  6. altogether
  7. abbr. for 共产党 Gòngchǎndǎng, Communist party
2 栖 qī
  1. to perch
  2. to rest (of birds)
  3. to dwell
  4. to live
  5. to stay