|1.||chiefly (Brit) a small hand axe|
|2.||a butcher's cleaver|
|3.||a person or thing that cuts or chops|
|4.||an informal name for a helicopter|
|5.||chiefly (Brit) a slang name for penis|
|6.||See also vibrator a device for periodically interrupting an electric current or beam of radiation to produce a pulsed current or beam|
|7.||a type of bicycle or motorcycle with very high handlebars and an elongated saddle|
|8.||(NZ) a child's bicycle|
|9.||obsolete, slang chiefly (US) a sub-machine-gun|
any of several types of transistors having four semiconducting layers and therefore three p-n junctions; the thyristor is a solid-state analogue of the thyratron vacuum tube, and its name derives from the combination of the two words thyratron and transistor. A common form of thyristor is the silicon-controlled rectifier (SCR), used to convert alternating current (AC) to direct current (DC) and widely used as a component of devices that control motor speeds, liquid levels, temperatures, and pressures.
Learn more about chopper with a free trial on Britannica.com.