Factories must treat wastewater before discharging it into the river to prevent contamination of the local water supply.
工厂在将废水排入河流之前必须进行处理，以防止污染当地水源。
A study of hospital patients found that those assigned to rooms with a view of a natural landscape recovered from surgery and were discharged, on average, a day earlier than patients in otherwise identical rooms with a view of a brick wall.
From a Inferences question · Information and Ideas
A study of hospital patients found that those assigned to rooms painted a soft green recovered from minor surgery and were discharged, on average, several hours earlier than patients in otherwise identical rooms painted stark white.
From a Inferences question · Information and Ideas
Which choice best defines “discharge”?
B — To release or allow to leave. “discharge” means to release or allow to leave.
Which word means “to release or allow to leave”?
D — discharge. “discharge” means to release or allow to leave.
discharge — to release or allow to leave. In Chinese: 释放，排放.
discharge is pronounced /dɪsˈtʃɑːrdʒ/.
Factories must treat wastewater before discharging it into the river to prevent contamination of the local water supply. (工厂在将废水排入河流之前必须进行处理，以防止污染当地水源。)
release, emit, expel — all close in meaning to discharge (to release or allow to leave).
retain, absorb — each the opposite of discharge (to release or allow to leave).
Yes. discharge is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.