countertransport

countertransport

 [kown″ter-trans´port] the simultaneous transport of two substances across a membrane in opposite directions, either by the same carrier or by different carriers that are biochemically linked to each other. See also cotransport.

count·er·trans·port

(kown'ter-tranz'pōrt), The transport of one substance across a membrane, coupled with the simultaneous transport of another substance across the same membrane in the opposite direction.

count·er·trans·port

(kown'tĕr-trans'pōrt) The transport of one substance across a membrane, coupled with the simultaneous transport of another substance across the same membrane in the opposite direction.