If a part of your body is distended, or if it distends, it becomes swollen and unnaturally large.
例句
Through this incision, the abdominal cavity is distended with carbon dioxide gas...二氧化碳氣體通過這個切口進入，造成腹腔腫脹。The colon, or large intestine, distends and fills with gas.結腸，或大腸，因充滿氣體而膨脹。
英英詞典釋義
Adjective
1. abnormally distended especially by fluids or gas;
"hungry children with bloated stomachs""he had a grossly distended stomach""eyes with puffed (or puffy) lids""swollen hands""tumescent tissue""puffy tumid flesh"
2. abnormally expanded or increased in size; (`swollen' is sometimes used in combination);
"distended wineskins""the need to clean out swollen inventories""the raisins were plump and soft and swollen from being soaked""huge blood-swollen mosquitoes"