used to form nouns referring to an operation to remove a particular body part or type of tissue from the body

The drug is not recommended for postoperative pain in children after adenoidectomy or tonsillectomy. 不推荐在接受增殖腺或扁桃体切除术后的儿童身上用这种药来术后止痛。

She found a lump in her breast and underwent a lumpectomy. 她在乳房上发现一个肿块，于是去做了局部病灶切除术。