Definition of photophoresis in US English:

photophoresis

noun

Physics
  • The directional motion of small particles under the influence of light.

noun

Medicine
  • = photopheresis.

Origin

Early 20th century; earliest use found in Scientific Abstracts. From photo- + -phoresis, after German Photophorese<br>1990s; earliest use found in Bone Marrow Transplantation. Alteration of photopheresis, after -phoresis.

Pronunciation

photophoresis

/ˌfəʊtəʊfəˈriːsɪs/