乳突窦

Traditional form:

乳突竇

Pinyin (reading):

rǔtūdòu

Definitions:

• mastoid antrum (bones at the back of tympanic chamber)

Characters:

• 乳 - breast, nipples; milk; to suckle
• 突 - sudden, abrupt, unexpected
• 窦 - sinuses; corrupt; surname

Traditional characters:

• 乳 - breast, nipples; milk; to suckle
• 突 - sudden, abrupt, unexpected
• 竇 - sinuses; corrupt; surname