1. Important derivatives are: sneeze, snore, snort, pneumatic
重要派生词为： sneeze， snore， snort， pneumatic

2. To breathe. Imitative root.
呼吸. 拟声词根.

3. sneeze , from Old English fn?osan , to sneeze, from Germanic *fneu-s- .
sneeze , 源自 古英语 fn?osan , 打喷嚏, 源自 日耳曼语 *fneu-s- .

4. snore , ( snort ), from Old English fnora , sneezing, from Germanic *fnu-s- .
snore , ( snort ), 源自 古英语 fnora , 喷嚏, 源自 日耳曼语 *fnu-s- .

5. apnea , dipnoan , dyspnea , eupnea , hyperpnea , hypopnea , polypnea , tachypnea , from Greek pnein , to breathe, with o-grade nouns pnoia , breathing, and pno? , breath.
apnea , dipnoan , dyspnea , eupnea , hyperpnea , hypopnea , polypnea , tachypnea , 源自 希腊语 pnein , 呼吸, 和O 级名词 pnoia , 呼吸, 和 pno? , 呼吸.

6. Suffixed form *pneu-m^? . pneuma , pneumatic , pneumato- , pneumo- , from Greek pneuma , breath, wind, spirit.
添加后缀的形式*pneu-m^? . pneuma , pneumatic , pneumato- , pneumo- , 源自 希腊语 pneuma , 呼吸，气息, 气味, 精神.

7. Germanic variant root *fnes- . sneer , from Old English fn^?ran , to snort, gnash one's teeth.
日耳曼语变体词根*fnes- . sneer , 源自 古英语 fn^?ran , 哼着鼻子, 咬牙切齿.

pneu的词源：

8. Pokorny pneu- 838.
波科尔尼pneu- 838.