transpiration
Botanical term for the process by which plants lose water vapor, mainly through stomata in leaves.
Transpiration is the phenomenon in which plants release water absorbed from the roots as water vapor through the leaves.
蒸散 is a shorter form meaning transpiration, often used in compounds or technical contexts. 蒸散作用 explicitly includes 作用 (action/effect), emphasizing the physiological process.
Photosynthesis, a related plant process that often occurs alongside transpiration.
Compound of 蒸散 (transpiration) and 作用 (action, effect). The term is a direct translation of the English 'transpiration' in botanical contexts.