noun
transpiration
Botanical term for the process by which plants lose water vapor, mainly through stomata in leaves.
蒸散作用は、植物が根から吸い上げた水を葉から水蒸気として放出する現象です。
Transpiration is the phenomenon in which plants release water absorbed from the roots as water vapor through the leaves.
Compound of 蒸散 (transpiration) and 作用 (action, effect). The term is a direct translation of the English 'transpiration' in botanical contexts.