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/ac·tive/ (ak´tiv) characterized by action; not passive; not expectant.


adjective A term of art defined by users in different fields:
Referring to the presence of neutrophils in gastric biopsies. Active is loosely equivalent to “acute” and often indicates infection by Helicobacter pylori.

Not passive; not expectant, as in active disease, which contrasts to quiescent disease.


A term of art defined by users in different fields. In gastroenterology, active refers to presence of neutrophils in gastric biopsies. Active is loosely equivalent to “acute” and often indicates infection by Helicobacter pylori.


adjective Not passive, not expectant


A brand name for testing strips for blood glucose in the range 0.6 to 33.3 mmol per litre.


adj in orthodontics, pertaining to the condition of an orthodontic appliance that has been adjusted to apply effective force to the teeth or jaws.
active reciprocation,


not passive.

active principle
the drugs or chemicals in a pharmaceutical preparation that exert an effect pharmacologically; as distinct from the inert fillers, wetting agents and other excipients also often included.
active site
that region of a protein, usually an enzyme, that binds to another molecule such as the substrate of the enzyme.
active transport
the movement of ions or molecules assisted by a carrier protein across the cell membranes and epithelial layers, usually against a concentration gradient, resulting directly from the expenditure of metabolic energy. For example, under normal circumstances more potassium ions are present within the cell and more sodium ions extracellularly. The process of maintaining these normal differences in electrolytic composition between the intracellular fluids is active transport. The process differs from simple diffusion or osmosis in that it requires the expenditure of metabolic energy.

Patient discussion about active

Q. Are there any nice activities for adults with autism? I've been helping a very nice man of 45 of years old and I'm looking for some new things I can do with him in our time together. any ideas?

A. Autistic people react wonderfully with animals. for instance- i saw a group of severe Autistic teenagers going to swim with dolphins. the effect was amazing! taking him to the zoo, or even to the park to feed ducks, pet dogs, whatever.. could have a great effect on him.
hope i helped!
tell me how it went.

Q. what is a passive smoking? and is it dangerous as an active?

A. Passive smoking is the exposure to cigarettes smoke emitted from cigarettes smoke by other person. It's dangerous and may increase the risk to several diseases similar to active smoking (one's exposure to smoke emitted from the cigarettes he or she is smoking) although the risk is of lower magnitude. Example for passive smoking is children of smokers etc.

You may read more here:

Q. i swim a lot ! what are the advantages of swimming over other sport activities? on what part of the body does it work the most ?

A. its a good workout but your not really going to burn as much calories as a regular work out.

More discussions about active
References in periodicals archive ?
Customers can upgrade the new active matrix black and white VGA display to an active matrix color panel, and the 386SL microprocessor can be upgraded to Intel 486SL chips.
By introducing Thin Film Transistor (TFT) active matrix black and white display technology to its portable line, Compaq gives customers crystal clear images with high contrast and sharp resolution; outstanding graphics performance; and an exceptional viewing angle -- virtually on par with the viewing quality of a desktop monitor.
FASwitch electrostatically-driven membrane switches are patterned with metal traces to form active matrix switch arrays that can be produced with the same roll-to-roll processes that are used in the flexible circuit industry," says Dr.
The company has developed its active matrix OLED microdisplays on silicon chips, taking advantage of the processing capability to buffer video information at each pixel for a more responsive virtual imaging experience.
eMagin is the only company to announce, show, and sell full-color active matrix OLED-on-silicon microdisplays, licensing OLED technology from Eastman Kodak Company.
eMagin is a leader and innovator in near-to-the-eye virtual imaging technologies and products, integrating high-resolution active matrix organic light emitting diode (OLED) microdisplays (smaller than one inch), magnifying optics, and systems technologies to create a virtual image that appears comparable to that of a computer monitor, a large-screen television, or even a theater-like experience.
eMagin Corporation (AMEX:EMA), the leader in active matrix OLED microdisplays, is highlighting products employing its technology in booth 1051 at the 2004 Society for Information Display (SID) International Symposium and Exhibition at the Washington Convention Center in Seattle through Thursday, May 27.
Continuing its pioneering role in the OLED display industry, Eastman Kodak Company is introducing new high-performance materials for the manufacture of OLED displays and demonstrating active matrix organic light emitting diode (AM OLED) display panels in new sizes and formats, expanding the range of potential uses for the technology.