Noun

(label) 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.

(label) A quantity analogous to electrical impedance in some other energy domain

# a measure of opposition to motion of something subjected to a force; the ratio of force to velocity treated as complex quantities.

# the ratio of sound pressure to volume flow rate treated as complex quantities.

a measure of the opposition caused by differences between two paradigms, especially between object-oriented development and relational databases

* 1997 , Bhavani M. Thuraisingham, Data Management Systems: Evolution and Interoperation (ISBN 0849394937), CRC Press, page 33:

Some argue that having impedance mismatch is difficult for programming intensive applications.

* 2002 , Jim Melton, Advanced SQL:1999: Understanding Object-Relational and Other Advanced Features (ISBN 1558606777), Morgan Kaufmann, page 353:

But the impedance mismatch between SQL and Java was no better than between SQL and other languages.

* 2004 , Scott W. Ambler, The Object Primer: Agile Model-Driven Development with UML 2.0 (ISBN 1397805218), Cambridge University Press, page 442:

Why does a technological impedance mismatch exist?

Noun

(en-noun)

The tendency to attract.

The feeling of being attracted.

* , chapter=5

, title= Mr. Pratt's Patients , passage=When you're well enough off so's you don't have to fret about anything but your heft or your diseases you begin to get queer, I suppose. And the queerer the cure for those ailings the bigger the attraction . A place like the Right Livers' Rest was bound to draw freaks, same as molasses draws flies.}}

An event or location that has a tendency to attract visitors.

(chess) The sacrifice of pieces in order to expose the enemy king.