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Impedance (noun)
The act of impeding; that which impedes; a hindrance.
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Impedance (noun)
A measure of the opposition to the flow of an alternating current in a circuit; the aggregation of its resistance, and inductive and capacitive reactances; the ratio of voltage to current treated as complex quantities.
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Impedance (noun)
A quantity analogous to electrical impedance in some other energy domain
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Impedance (noun)
a measure of opposition to motion of something subjected to a force; the ratio of force to velocity treated as complex quantities.
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Impedance (noun)
a measure of the opposition caused by differences between two paradigms, especially between object-oriented development and relational databases
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Resistance (noun)
The act of resisting, or the capacity to resist.
“widespread resistance to the new urban development plans”
“the resistance of bacteria to certain antibiotics”
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Resistance (noun)
A force that tends to oppose motion.
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Resistance (noun)
Shortened form of electrical resistance.
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Resistance (noun)
An underground organisation engaged in a struggle for liberation from forceful occupation; a resistance movement.
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Resistance (noun)
the refusal to accept or comply with something
“they displayed a narrow-minded resistance to change”
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Resistance (noun)
the use of force or violence to oppose someone or something
“she put up no resistance to being led away”
“government forces were unable to crush guerrilla-style resistance”
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Resistance (noun)
a secret organization resisting authority, especially in an occupied country
“he went underground and joined the resistance”
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Resistance (noun)
the underground movement formed in France during the Second World War to fight the German occupying forces and the Vichy government.
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Resistance (noun)
the ability not to be affected by something, especially adversely
“some of us have a lower resistance to cold than others”
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Resistance (noun)
lack of sensitivity to a drug, insecticide, etc., especially as a result of continued exposure or genetic change
“many insects show resistance to at least one chemical”
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Resistance (noun)
the impeding or stopping effect exerted by one material thing on another
“air resistance was reduced by streamlining”
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Resistance (noun)
the degree to which a substance or device opposes the passage of an electric current, causing energy dissipation. By Ohm’s law resistance (measured in ohms) is equal to the voltage divided by the current.
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Resistance (noun)
a resistor or other circuit component which opposes the passage of an electric current.