active transport

noun

Definition of active transport

: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

First Known Use of active transport

1922


Medical Dictionary

active transport

noun

medical Definition of active transport

:movement of a chemical substance by the expenditure of energy against a gradient in concentration or electrical potential across a plasma membrane

Learn More about active transport


Seen and Heard

What made you want to look up active transport? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

a blind with adjustable horizontal slats

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!