Entries starting with D

483 entries.

directivity

A measure of the performance of an antenna compared to an isotropic antenna; the ratio of the maximum value of radiation intensity to the average radiation intensity.

disc brake

A type of brake where the friction is produced by brake pads which are pressed against a disc (or rotor) made of steel or ceramic.

discrete

Having separate electronic components, such as individual diodes, transistors and resistors, as opposed to integrated circuitry.

disk

To move towards, or operate at, zero blade pitch, orienting the propeller blades face-on to the oncoming airstream and maximizing the drag generated by the propeller.

disk wheel

A wheel consisting of a solid convex or concave surface extending from its hub to rim.

DITA

adjectiveAutomotive

Initialism of direct injected turbocharged aftercooled.

dive-under

A railway junction where at least one track passes under other lines instead of crossing them on the same level, in order to avoid conflicting movements; an underpass.

divebomb

Of a motorist, to overtake slower traffic by way of a more circuitous route, such as a pair of freeway exit and entrance ramps.

dock

A device designed as a base for holding a connected portable appliance for providing the necessary electrical charge for its autonomy, or as a hardware extension for additional capabilities.

docking station

A piece of hardware that expands the connectivity of a laptop or mobile device by linking it to peripherals such as monitors, keyboards, mice, and external drives through a single connection.

DOD

Initialism of displacement-on-demand (a type of engine that can shut down cylinders when not needed).

doff

To remove (small pieces of cotton or other plant fibre, etc.) from a carding cylinder.