A registered trademark for plastic sheeting material that can be used as a vapor retarder. This plastic is used to make grocery bags. It is a long chain of carbon atoms with 2 hydrogen atoms attached to each carbon atom.

A time or a date draft that has been accepted by the buyer (the drawee) for payment at maturity.

Shanties are the work songs that were used on the square-rigged ships of the Age of Sail. Their rhythms coordinated the efforts of many sailors hauling on lines.

A connection or link between power systems that enables them to draw on each other's reserve capacity in time of need.

To purchase enough of the available supply of a commodity or stock in order to manipulate its.

Steps in the compression of a gas, In reciprocating compressors, each stage usually requires a separate cylinder, in dynamic compressors, each requires a separate rotor disc.

Is a compression in which the temperature of a gas remains constant.

The pressure encountered on the return side of a system.

A private trust which empowers trustees to use their discretion in distributing funds to.

Is the total gas pressure (static plus velocity) at the discharge port of the compressor. Velocity pressure is considered only with dynamic compressors.

A sail placed forward of the mast, such as a jib; the sail set from the foremast on a schooner; the lowest square sail on the foremast of Square Riggers.

Long wave formations during calm or light air formed by waves running into shoaling water

A bridge that swings away from the waterway so that boats may pass beside it.

A type of solar thermal system where air is heated in a collector and either transferred directly to the interior space or to a storage medium, such as a rock bin.

See 'baby.

Wheeled under-carriage on which a container or chassis may be placed.

To give the steersman the de-sired course to be steered.

A material (such as oil) used between moving parts of machinery to make the surfaces slippery and reduce friction.

Also known as PM, maintenance performed according to a fixed schedule involving the routine repair and replacement of machine parts and components.

The aft edge of a sail, more commonly called the leech.