trans- [trans, tr?:ns, -nz]
¦ prefix
1. across; beyond: transcontinental.
on or to the other side of: transatlantic.
2. through: transonic.
into another state or place: translate.
transcending: transfinite.
3. Chemistry (usu. trans-) denoting molecules in which two particular atoms or groups lie on opposite sides of a given plane, especially denoting an isomer in which substituents at opposite ends of a carbon-carbon double bond are also on opposite sides of the bond: trans-1,2-dichloroethene.
Origin
from L. trans 'across'.
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trans-
denoting molecules in which two particular atoms or groups lie on opposite sides of a given plane, especially denoting an isomer in which substituents at opposite ends of a carbon-carbon double bond are also on opposite sides of the bond: