doubler

1 of 2

noun (1)

dou·​bler ˈdu̇-blər 

plural -s

dialectal, England

: a large plate or bowl

doubler

2 of 2

noun (2)

dou·​bler ˈdə-b(ə-)lər 

plural -s

1

: one that doubles: such as

a

: a textile worker who doubles thread or folds cloth usually by machine

b

: a textile machine for doubling yarn

2

a

: an instrument for so increasing a small initial quantity of electricity that it may be detected by the electroscope or the appearance of sparks

b

: an amplifier circuit whose output has twice the frequency of the input when the plate circuit is tuned to oscillate twice to each cycle of grid potential

frequency doubler

c

: a rectifier circuit in which each blocked half cycle of input voltage charges a capacitor so connected as to add its discharge to the next forward cycle and thus double the rectified output voltage

voltage doubler

3

: a part of a distilling apparatus for intercepting the heavier fractions and returning them to be redistilled

4

: either of a pair of mating crabs

5

: a usually fabric interlining that reinforces the lining of a shoe at vamp and tip

Word History

Etymology

Noun (1)

Middle English dobler, from Middle French doblier, doublier, from doblier, doublier, adjective, double, from Late Latin duplarius, from Latin duplus double + -arius -ary

Noun (2)

double entry 3 + -er

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