器官 (qì guān) means “(physiology) organ; apparatus”. It is an HSK 6 Chinese word in the HSK 3.0 vocabulary.
Practice each character:
心脏是人体重要的器官。
Xīnzàng shì réntǐ zhòngyào de qìguān.
The heart is an important organ.
Updated: 2026-05-27