A rectangular system of land survey, also called a government rectangular survey, used to subdivide public land, that divides a district into 24 square mile quadrangles from the Meridian (north-south line) and the Baseline (east-west line). The tracts are divided into 6-mile-square parts called townships, which are in turn divided into 36 tracts, each 1-mile square, called Sections.
Rectifier
A device that converts alternating current to direct current.
Recuperator
A heat exchanger in which heat is recovered from the products of combustion.
Recurrent costs
Costs that are repetitive and occur when an organization produces similar goods or services on a continuing basis.
Recycling
The process of converting materials that are no longer useful as designed or intended into a new product.
Red cedar
A rot-resistant wood used frequently for wood shakes.
Red herring
Slang for a proposed prospectus, not yet approved by the Securities and Exchange Commission (SEC) or State Securities Commission, which gives information about the important aspects of a new issue of securities without giving selling price information or date of the offering. The term is derived from the fact that there is a statement, in red ink, which advises the reader that it is not an official offer to sell the securities. Only after full approval, can the security be offered for sale.
Red lead
A primer that helps prevent rust. It is toxic and is no longer in common usage, having been replaced by red oxide.
Red oxide
A paint primer used to prevent rust. Its has generally replaced the toxic red lead.
Red water
Water which has a reddish or brownish appearance due to the presence of precipitated iron and/or iron bacteria.
