doubler -- (an electronic device that doubles the voltage or the frequency of an input signal)
Overview of adj double
The adj double has 7 senses
double, dual, twofold, two-fold, treble, threefold, three-fold -- (having more than one decidedly dissimilar aspects or qualities; "a double (or dual) role for an actor"; "the office of a clergyman is twofold; public preaching and private influence"- R.W.Emerson; "every episode has its double and treble meaning"-Frederick Harrison)
double, dual, duple -- (consisting of or involving two parts or components usually in pairs; "an egg with a double yolk"; "a double (binary) star"; "double doors"; "dual controls for pilot and copilot"; "duple (or double) time consists of two (or a multiple of two) beats to a measure")
double, doubled, twofold, two-fold -- (twice as great or many; "ate a double portion"; "the dose is doubled"; "a twofold increase")
double -- (used of flowers having more than the usual number of petals in crowded or overlapping arrangements; "double chrysanthemums have many rows of petals and are usually spherical or hemispherical")
bivalent, double -- (used of homologous chromosomes associated in pairs in synapsis)
double -- (large enough for two; "a double bed"; "a double room")
double, forked -- (having two meanings with intent to deceive; "a sly double meaning"; "spoke with forked tongue")