noun
- Transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). active transport. Retrieved September 20, 2026, from http://smartdefine.org/active_transport/definitions/1243205 |
| Chicago | WordNet. 2010. "active transport" http://smartdefine.org/active_transport/definitions/1243205 (accessed September 20, 2026). |
| Harvard | WordNet 2010, active transport, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/active_transport/definitions/1243205>. |
| MLA | WordNet. "active transport" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/active_transport/definitions/1243205> |