the branch of physics concerned with electromagnetic phenomena
magnetism produced by an electric current; "electromagnetism was discovered when it was observed that a copper wire carrying an electric current can magnetize pieces of iron or steel near it"
the lagging of an effect behind its cause; especially the phenomenon in which the magnetic induction of a ferromagnetic material lags behind the changing magnetic field
the action of opposing something that you disapprove or disagree with; "he encountered a general feeling of resistance from many citizens"; "despite opposition from the newspapers he went ahead"
the military action of resisting the enemy's advance; "the enemy offered little resistance"
group action in opposition to those in power
(psychiatry) an unwillingness to bring repressed feelings into conscious awareness
the degree of unresponsiveness of a disease-causing microorganism to antibiotics or other drugs (as in penicillin-resistant bacteria)
any mechanical force that tends to retard or oppose motion
memory device consisting of a long thin plastic strip coated with iron oxide; used to record audio or video signals or to store computer information; "he took along a dozen tapes to record the interview"
the act of dragging (pulling with force); "the drag up the hill exhausted him"
clothing that is conventionally worn by the opposite sex (especially women's clothing when worn by a man); "he went to the party dressed in drag"; "the waitresses looked like missionaries in drag"
something tedious and boring; "peeling potatoes is a drag"
something that slows or delays progress; "taxation is a drag on the economy"; "too many laws are a drag on the use of new land"
the phenomenon of resistance to motion through a fluid
proceed for an extended period of time; "The speech dragged on for two hours"
persuade to come away from something attractive or interesting; "He dragged me away from the television set"
pull, as against a resistance; "He dragged the big suitcase behind him"; "These worries were dragging at him"
to lag or linger behind; "But in so many other areas we still are dragging"
move slowly and as if with great effort
use a computer mouse to move icons on the screen and select commands from a menu; "drag this icon to the lower right hand corner of the screen"
having an indicated pole (as the distinction between positive and negative electric charges); "he got the polarity of the battery reversed"; "charges of opposite sign"
marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough"
(orthopedics) the act of pulling on a bone or limb (as in a fracture) to relieve pressure or align parts in a special way during healing; "his leg was in traction for several days"