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Related to octane number: cetane number, Research octane number


1. See: Bond rating.

2. See: Credit score.
Farlex Financial Dictionary. © 2012 Farlex, Inc. All Rights Reserved


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.
Wall Street Words: An A to Z Guide to Investment Terms for Today's Investor by David L. Scott. Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. All rights reserved.


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.

Dictionary of Financial Terms. Copyright © 2008 Lightbulb Press, Inc. All Rights Reserved.
References in periodicals archive ?
Today, the properties of petrol are generally enhanced through improving the chemical structure of petrol, upgrading production technologies and adding the required amount of oxygenates (MTBE, ETBE, etc.), the octane number whereof, as determined by the method of testing, makes up 118.
Traditionally, refineries have had to take gasoline samples back to the lab for analysis to determine the in-process octane number. That creates an extended time lapse between analyzing and making adjustments to the product, LeFebre said, and the sampling process does not always offer a true representation of what's happening in the pipe.
The Gulf country for the first time exported gasoline with low 75 research octane number (RON) in August, Reuters reported, after government officials told domestic news services that it had become self sufficient and started to export.
For petrol the main parameters of concern were research octane number, summer vapour pressure and distillation-evaporation at 100[degrees]C.
For petrol, the main parameters of concern were research octane number, summer vapour pressure and distillation-evaporation at 100[degrees]C.
Gasolines with knock tendencies between those two primary reference fuels are generally characterized by a Research Octane Number (RON) and/or a Motor Octane Number (MON).
In August last year, Honda Atlas Cars Pakistan in a complaint to Ogra reported high manganese content in recently upgraded 92RON (Research Octane Number), causing three major issues: catalyst blocking or choking of the catalytic converter, engine knock due to low octane quality fuels and adverse human health effects of manganese.