Definition of transpiration stream in English:

transpiration stream

Syllabification: tran·spi·ra·tion stream
Pronunciation: /ˌtran(t)spəˈrāSHən ˌstrēm
 
/

noun

Botany
The flow of water through a plant, from the roots to the leaves, via the xylem vessels.
More example sentences
  • The transpiration stream through the xylem transports cytokinins, as well as ABA, from the root to the shoot.
  • Xylem flow carries the transpiration stream and is normally entirely acropetal.
  • This scenario implies that water will be taken up by the xylem parenchyma whenever the water potential in the transpiration stream is high.

Definition of transpiration stream in:

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lack of modesty