active transport

1. 1.

   transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy

   Broadertransport

   drug

Questions about active transport

What does active transport mean?

active transport means "transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy".

Is active transport a common word?

active transport is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.