Entries starting with O

Initialism of operational transconductance amplifier.

ottoman

A fabric with a pronounced ribbed or corded effect, often made of silk or a mixture of cotton and silk-like yarns.

out of gauge

prep phraseRail equipment

Of rail vehicles, or loads carried on freight vehicles: where dimensions exceed the loading gauge or structure gauge for a particular line or route.

A type of transmission technology in which signaling is separate from the data being transmitted, using one or more channels for transmitting data or voice information and one out-of-band channel for performing signaling functions.

out-of-battery

adjectiveElectrical engineering

In battery-powered electronics, devoid of any power.

outbond

adjectiveConstruction

Of a brick or stone: laid with its length parallel to the face of the wall.

output

That which is produced by something, especially that which is produced within a particular time period or from a particular effort.

overbust

nounTextile production

The circumference of a woman's chest, measured over the breasts.

overcurrent protective device

A device, usually a fuse, polyfuse, or circuit breaker, intended to detect and stop an overcurrent condition.

overcutter

A device used to cut into rock walls from above.

overdrive

nounMechanical engineering

A gear ratio higher than 1:1: one in which a single revolution of the driving element corresponds to more than one revolution of the driven element.

overfire

verbIndustrial ceramics

To fire at a high (or excessively high) temperature.

overfrequency

The condition where the frequency of an electrical supply rises above normal parameters.

overhand

adjectiveConstruction

Laid such that the surface of the wall to be jointed is on the opposite side of the wall from the mason, requiring the mason to lean over the wall to complete the work.

overhaul

nounIndustrial safety

The process after the fire appears extinguished in which the firefighters search the structure for signs of hot spots that may cause the structure to reignite.

overhead cam

A type of cam (and camshaft) in an internal combustion engine, and thus also (metonymic) the type of valvetrain design, the type of engine that uses it, or an instance of such an engine; this design has the inlet and exhaust valves in the cylinder head and has the camshaft(s) up above the valves too.

overhead valve

A type of valve in an internal combustion engine, and thus also (metonymic) the type of valvetrain design, the type of engine that uses it, or an instance of such an engine; this design has the inlet and exhaust valves in the cylinder head (and therefore above the piston). The camshaft can be beside the pistons (with pushrods and rockers operating the valves) or above the valves, with the latter usually referred to as overhead cam.

overkill

An unnecessary excess of disposal because of too high criteria of inspection.

overlaunch

verbManufacturing

To run the butts or scarphs of planks or pieces of timber to a certain distance beyond the adjacent ones, in order to strengthen the work.

overload

nounAutomotive

An load of goods above the prescribed carrying weight of the vehicle.

overlock

A stitch that sews over the edge of one or two pieces of cloth for edging, hemming or seaming.

overpole

verbMetallurgy

To pole excessively.

overpulse

An electric pulse that spikes above normal operating levels.

overseamer

A machine for overseaming.

overshift

nounMechanical engineering

A misalignment resulting from shifting gears too far.

overshot