Rating

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Related to octane number: cetane number, Research octane number

Rating

1. See: Bond rating.

2. See: Credit score.

rating

The grading of a security with respect to a characteristic or a set of characteristics such as safety and growth. Rating is most often applied to debt securities, which are graded according to the issuer's ability to pay interest and principal when due. See also bond rating, downgrading, Moody's Investment Grade, not rated, stock rating, upgrading.

Rating.

Rating means evaluating a company, security, or investment product to determine how well it meets a specific set of objective criteria.

For example, a bond issue may be rated along a spectrum from highest quality investment grade to speculative, or from AAA to D.

Rating typically affects the interest rate a fixed-income security must pay to attract investors, forcing lower-rated bond issuers to pay higher rates. Other investors may shun low-rated investments entirely, unwilling to take the risk that the issuer might default. However, ratings are not infallible, even in industries, such as insurance, that are regularly scrutinized.

Rating differs from ranking, which assigns the relative standing of two or more similar items in relation to each other.

References in periodicals archive ?
9 Octane number by motor method 85 79 6 Total content of aromatic hydrocarbons, % 36.
It is interesting to note that in the United States, as well as in Europe, MTBE as a petrol additive to improve the octane number and to reduce the concentration of CO and hydrocarbons in the vehicle exhaust gases was promulgated and introduced into practice on a very large scale without a comprehensive evaluation of environmental or health consequences.
The octane number of ethanol is higher than that of MTBE and ethanol reduces the concentration of CO and hydrocarbons in emissions more than MTBE [1].
Fortunately, the new alternative methods of improving the antiknock properties of petrol are now available and include the application of up-to-date technologies and chemical processing techniques in the production of petrol and the use of high octane number components (oxygenates).
Actual runs at the refinery show that InfraTane(TM) is two to three times more accurate than knock-engine lab measures of octane numbers," Miller said, adding that millions of gallons of gasoline have been successfully blended using the system.
21 /PRNewswire/ -- Mobil said today it has been told by New York State that a number of gasoline samples the state took from Mobil service station gasoline pumps recorded octane numbers lower than octane numbers posted at the pumps.
The contract is for the supply, installation, foundation and connection to existing installations: water, electricity and sewage systems, Waukesha engine for determining octane numbers LOB and LOM (RON and MON) gasoline (resistance to combustion knock) according to the requirements of PN-EN ISO 5163 and BS EN ISO 5164.
Alkylate also has a low sulfur content, a limited heavy end, a low vapor pressure and both high research and high motor octane numbers.
It's rare for an engine designed to run on regular to move up five octane numbers to premium because of engine deposits -- especially with the level of detergents being used in all gasoline today," Van Sickle said.
5 research octane numbers over previous runs, with the unit operating at comparative conditions.
21 /PRNewswire/ -- Mobil Corporation (NYSE: MOB) said today it has been told by New York State that a number of gasoline samples the state took from Mobil service station gasoline pumps recorded octane numbers lower than octane numbers posted at the pumps.
SIMSCI(sm)) Thursday disclosed the development of a new method for predicting octane numbers in gasoline blends.