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Active
(redirected from active transport)

   Also found in: Dictionary/thesaurus, Medical, Legal, Encyclopedia, Wikipedia, Hutchinson 0.02 sec.
Active
A market in which there is frequent trading.

active
Of or relating to a security in which there is a great deal of trading. Active securities appeal to many investors because they usually can be traded without affecting the price. In over-the-counter trading, an active security usually has a smaller spread between the bid and ask price. See also most-active stocks.

Active
1. Describing a security that is traded with relative frequency. Many investors look to active securities because they can be traded, even in rather large quantities, without affecting the price. Active securities usually have a low bid-ask spread.

2. Describing a market or exchange with a high trading volume.


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? Mentioned in ? References in periodicals archive
 
This finding was consistent with an active transport mechanism across the placenta.
Others have suggested that nitrate or the reduced form (nitrite) may pass to the fetus through a system of active transport similar to that of iodide, and fetal nitrate plasma levels may exceed that of the mother (Hartman 1982).
Interestingly, from a separate questionnaire sent home for parents to complete, the majority of parents (77%) stated they either walked or cycled to school themselves as 10-year-olds, indicating a substantial decrease in active transport in only one generation.
 
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