tumor
词根词缀：
tumefy v. （使）肿胀，（使）肿大
tum 肿 + efy 使… → （使）肿胀，（使）肿大
tumescent adj. 肿起的，肿胀性的
tum 肿 + escent 开始出现…的 → 肿起的，肿胀性的
tumid adj. 肿胀的
tum 肿 + id …的 → 肿胀的
tumidity n. 肿起，肿胀
tumid 肿胀的 + ity 具备某种性质，状况 → 肿起，肿胀
tumor n. 瘤，肿块
tum 肿 + or 器物 → 瘤，肿块
数据来源：新东方英语词汇速记大全
相关例句：
SCLC is a highly malignant tumor, and carcinoid tumors and atypical carcinoid tumors are low-and moderate-grade malignant.
SCLC是高度恶性肿瘤，而类癌和不典型类癌属于低度恶性和中度恶性。
Endogenous angiogenesis inhibitors act as tumor suppressor proteins.
内源性血管生成抑制剂可作为一种抑癌蛋白。
I was thinking a cyst or a tumor.
我想是囊肿或者是肿瘤。
Mesothelioma and lung cancer are completely different diseases, with different origin sites, tumor structure and treatability.
间皮瘤和肺癌是两个在起源、肿瘤构成和治疗等完全不同的疾病。
Previous studies show it related with activation of T-cell and metastases of breast tumor cells.
先前的研究显示，它与T细胞的活化和乳癌细胞的转移有关。
Objective To investigate the relationship between microvessel density and tumor size in pituitary adenoma.
目的探讨垂体腺瘤中微血管密度与肿瘤大小的关系。