Definition for active transport - Oxford Dictionaries Online (World English)

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	active transport (ac¦tive trans\|port) noun [mass noun] Biology the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.		More words in this category -blast ancestry cell membrane coverslip ephemeral exponential growth gigantism gradualism hypertonic indentation monolayer nucleoprotein pentaploid phototaxis primitive streak pyriform superfamily taxonomy thigmotropism tuberculation Nearby Words active carbon active citizen active duty active immunity active layer active list active matrix active service active site active transport activewear activism activity actomyosin actor actor-manager actorly Actors' Studio actress