Share this entry

photorespiration Line breaks: photo|respir¦ation
Pronunciation: /ˌfəʊtəʊrɛspɪˈreɪʃ(ə)n/

Definition of photorespiration in English:


[mass noun] Botany
A respiratory process in many higher plants by which they take up oxygen in the light and give out some carbon dioxide, contrary to the general pattern of photosynthesis.
Example sentences
  • Oxygen can also be reduced in the processes of photorespiration.
  • It was suggested above that one proton was released in the chloroplast stroma for every three oxygen molecules fixed during photorespiration.
  • It is therefore likely that photorespiration of herbaceous leaves is driven by a large carbon pool.

Definition of photorespiration in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources