| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
resistance (rɪˈzɪstəns) ![]() | |
| —n | |
| 1. | the act or an instance of resisting |
| 2. | the capacity to withstand something, esp the body's natural capacity to withstand disease |
| 3. | a. Compare reactance R the opposition to a flow of electric current through a circuit component, medium, or substance. It is the magnitude of the real part of the impedance and is measured in ohms |
| b. (as modifier): resistance coupling; a resistance thermometer | |
| 4. | any force that tends to retard or oppose motion: air resistance; wind resistance |
| 5. | (in psychoanalytical theory) the tendency of a person to prevent the translation of repressed thoughts and ideas from the unconscious to the conscious and esp to resist the analyst's attempt to bring this about |
| 6. | physics the magnitude of the real part of the acoustic or mechanical impedance |
| 7. | line of least resistance the easiest, but not necessarily the best or most honourable, course of action |
| 8. | See passive resistance |
resistance re·sis·tance (rĭ-zĭs'təns)
n.
The capacity of an organism to defend itself against a disease.
The capacity of an organism, a tissue, or a cell to withstand the effects of a harmful physical or environmental agent.
The opposition of a body or substance to current passing through it, resulting in a change of electrical energy into heat or another form of energy.
In psychoanalysis, a process in which the ego opposes the conscious recall of repressed unpleasant experiences.
resistance (rĭ-zĭs'təns) Pronunciation Key
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In electricity, a measurement of the difficulty encountered by a power source in forcing electric current through an electrical circuit, and hence the amount of power dissipated in the circuit. Resistance is measured in ohms.