retroflex
/ˈretrəʊfleks/(亦作retroflexed)
adjective
1- Anatomy & Medicine turned backwards【剖, 医】后屈的; 反折的：
a retroflexed endoscope.
反折式内窥镜。
1.1
- Phonetics pronounced with the tip of the tongue curled up towards the hard palate【语音】卷舌的, 卷舌音的：
the retroflex /r/.
卷舌音/r/。
派生词
retroflexion
noun词源
late 18th cent.: from Latin retroflex- 'bent backwards', from the verb retroflectere, from retro 'backwards' + flectere 'to bend'.