超ちょう低てい

noun which may take the genitive case particle 'no', prefix

ultra-low; very low; hyper-; infra-

Prefix-like element used in technical and descriptive compounds to mean extremely low in height, temperature, frequency, etc. Not a standalone word; always attaches to another noun.

• 超ちょう低てい温おんで保ほ存ぞんする必ひつ要ようがある。

  It needs to be stored at ultra-low temperatures.

• 超ちょう低てい周しゅう波はの音おとは人にん間げんには聞きこえない。

  Ultra-low frequency sounds are inaudible to humans.