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active transport
noun
: the movement of a chemical substance by the expenditure of energy against a gradient in concentration or in electrical potential across a plasma membrane compare passive transport
Word History
First Known Use
1922, in the meaning defined above
Dictionary Entries Near active transport
Cite this Entry
“Active transport.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/active%20transport. Accessed 29 May. 2024.
Kids Definition
active transport
noun
: the movement (as across a cell membrane) of substances from regions of lower concentration to regions of higher concentration by the use of energy
Medical Definition
active transport
noun
: movement of a chemical substance by the expenditure of energy against a gradient in concentration or electrical potential across a plasma membrane
More from Merriam-Webster on active transport
Britannica.com: Encyclopedia article about active transport
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Merriam-Webster unabridged
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