回かい転てん異い性せい体たい

noun

rotational isomer

Technical term in chemistry referring to isomers that differ by rotation around a single bond.

• エタンの回かい転てん異い性せい体たいには重かさなり形がたとねじれ形がたがある。

  Ethane has rotational isomers: the eclipsed form and the staggered form.