| 单词 | masto | 
| 释义 | masto- in British English or before a vowel mast- combining form indicating the breast, mammary glands, or something resembling a breast or nipple  mastodon  mastoid Word originfrom Greek mastos breast masto- in American English (ˈmæstoʊ; ˈmæstə)  of or like a breast, or mammary gland   mastectomy Word origin< Gr mastos, a breast: see  mast2 Definition of 'masto-' | 
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