This is the 18092nd most frequent Russian word.
химиотерапию
Chemotherapy: a medical treatment using chemical substances to treat diseases, typically cancer.
The word 'химиотерапию' is used to indicate the therapeutic treatment.
Пациент начал химиотерапию для лечения рака.
The patient began chemotherapy to treat cancer.
Here, 'химиотерапии' is used as the subject of the discussion.
Доктор объяснил преимущества химиотерапии перед процедурой.
The doctor explained the advantages of chemotherapy before the procedure.
In this case, 'химиотерапия' serves as the main subject of the sentence, describing its nature.