active air defense | air defense by the use aircraft or missiles or artillery or electronic countermeasures |
active matrix screen | a type of LCD screen used for some portable computers, there is a separate circuit for each pixel |
active placebo | a placebo used in experimental tests of a drug that has noticeable side effects, an active placebo mimics the side effects of the experimental drug |
drug cocktail highly active antiretroviral therapy HAART | a combination of protease inhibitors taken with reverse transcriptase inhibitors, used in treating AIDS and HIV |
active application | an application that is currently running and in the foreground |
active site | the part of an enzyme or antibody where the chemical reaction occurs |
active | a person who is a participating member of an organization, the club issues a list of members, both the actives and the retirees |
active citizen | a citizen who takes an active role in the community (as in crime prevention and neighborhood watch) |
active trust | a trust in which the trustee must perform certain duties |
active birth | childbirth during which the mother is encouraged to be an active participant |
active transport | transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient, requires an expenditure of energy |
active voice active | the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb, `The boy threw the ball' uses the active voice |
active immunity | a form of acquired immunity in which the body produces its own antibodies against diseaseausing antigens |
active agent active | chemical agent capable of activity |
wetting agent wetter surfactant surface-active agent | a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved |
be active move | be in a state of action, she is always moving |
active | characterized by energetic activity, an active toddler, active as a gazelle, an active man is a man of action |
active | engaged in full-time work, active duty, though past retirement age he is still active in his profession |
active | full of activity or engaged in continuous activity, an active seaport, an active bond market, an active account |
active | tending to become more severe or wider in scope, active tuberculosis |
active | disposed to take action or effectuate change, a director who takes an active interest in corporate operations, an active antagonism, he was active in drawing attention to their grievances |
active | (of e.g. volcanos) erupting or liable to erupt, active volcanos |
active | (of e.g. volcanos) capable of erupting |
active dynamic | (used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water')) expressing action rather than a state of being |
active | expressing that the subject of the sentence has the semantic function of actor: Hemingway favors active constructions |
active | exerting influence or producing a change or effect, an active ingredient |
surface-active | capable of lowering the surface tension of a liquid, used especially of detergents |
active | (of the sun) characterized by an increased occurrence of sunspots and flares and radio emissions |
active alive(p) | in operation, keep hope alive, the tradition was still alive, an active tradition |
active participating | taking part in an activity, an active member of the club, he was politically active, the participating organizations |
active combat-ready fighting(a) | engaged in or ready for military or naval operations, on active duty, the platoon is combat-ready, review the fighting forces |