항암이 · 항암을
anticancer, fighting cancer (esp. chemotherapy)
Example
삼촌은 지난달부터 항암 치료를 받고 계세요.
My uncle has been undergoing chemotherapy since last month.
Word parts
항 fight+암 cancer
Literally 'fight cancer'. 항- = anti-: 항생제, 항균.
Good to know
Mostly used before another noun: 항암 치료, 항암제, 항암 효과.