A patient; a person receiving medical treatment for an illness or injury.
今日、病院には多くの患者が来ていた。
Many patients came to the hospital today.
その患者は重症で入院が必要だ。
That patient is in serious condition and needs hospitalization.
医師は患者の話を丁寧に聞いた。
The doctor listened carefully to the patient's story.