Biologic Function
phototaxis Audio
pho·to·tax·is [ foh-tuh-tak-sis ]
Subclass of:
taxis response
Definitions related to phototaxis:
  • A behavioral change that results in an organism moving or orienting toward or away from the light source.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • The directed movement of a motile cell or organism in response to light.
    Gene Ontology Dictionary
    Gene Ontology Consortium, 2021
Try this search on: Farlex, Merriam-Webster, Oxford Dictionary, or Wordnik

This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.