noun
seriously ill person; person with a serious illness
Refers to a person suffering from a severe or life-threatening illness. Often used in medical or caregiving contexts.
彼は重病人なので、面会は家族だけに限られている。
He is a seriously ill patient, so visits are limited to family only.
重病人を看護
Nursing a seriously ill person is mentally demanding as well.
病人 is a general term for a sick person, whereas 重病人 specifies a seriously ill person.
Compound of 重 (じゅう, 'serious') + 病人 (びょうにん, 'sick person').