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Off Time

The part of an electrical signal during which an electrical device is de-energized.

Off-highway Vehicle (OHV)

A vehicle intended for off-road use.

Off-road

Any unpaved, rough or ungraded terrain on which off-road activities take place.

Off-road Vehicle (ORV)

Any vehicle designed for used in off-road activities.

Off-the-road Vehicle (ORV)

A term used for off-road vehicle.

Office

The driver's compartment.

Office Manager

An employee or company official whose duties vary from general office procedures to serving as a parts manager and bookkeeper.

Offie

1. An Offenhauser racing engine. 2. Any product, such as a manifold or valve cover, manufactured by the Offenhauser Equipment Company.

Offset

1. A term used for wheel offset. 2. A condition when two parts are not directly in line with each other.

Offset Link

A type of chain link that utilizes bent, or offset link plates and is assembled with a pin at one end and a bushing and roller at the other end, so as to act as a combination link.

Offset Rod

A rod on which the bran section is not directly centered over the bearing housing.

Offset Section

A factory-assembled section of roller chain, made up of a roller link and an offset link, and used to connect strands of chain having an odd number of pitches.

Offside

The side of a vehicle away from the curb.

Ogee

An S-shaped curve.

OHC

Over head camshaft.

Ohm

The unit used to measure the amount of electrical resistance in a circuit or an electrical or electronic device.

Ohm's Law

The law that states that the direct current through an electric circuit is proportional to the voltage applied; given by the equation I=E/R, where I is current, E is electromotive force and R is resistance.

Ohmmeter

An analog or digital instrument used to measure electrical resistance in ohms.

OHV

1. An abbreviation for off-highway vehicle. 2. An abbreviation for overhead valve.

OIHC

An abbreviation for overhead cam or overhead camshaft.