TNT Equivalent

Also found in: Dictionary, Thesaurus, Wikipedia.

TNT equivalent

[¦te‚en¦tē i′kwiv·ə·lənt]
A measure of the energy released in the detonation of a nuclear weapon, expressed in terms of the weight of TNT that would release the same amount of energy when exploded; usually expressed in kilotons or megatons of TNT; based on the release of 109 calories (approximately 4.18 × 109 joules) of energy by 1 ton of TNT.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

TNT Equivalent


the mass of a conventional charge of a chemical explosive—trinitrotoluene, or TNT—whose energy of explosive decomposition is equal to the energy released in a given nuclear explosion. The TNT equivalent characterizes the explosive power of nuclear and thermonuclear charges and is calculated according to the formula

where Qne is the energy released in the nuclear explosion and QTNT is the explosive energy of 1 ton of trinitrotoluene; it is measured in kilotons and megatons.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The bomb was reported to weigh up to 40kg of TNT equivalent, and stuffed with metal bars, bolts and ball bearings.
The model features B7 levels of ballistic protection capable of protecting against 15 kg of TNT equivalent detonated.
firing range (metres) (day and 80.00 night) Overall dimensions, (mm) missile caliber 130 length of container with missile 980 Warheads tandem Heat, thermobaric HE Mean armour penetration, Heat 950 TNT equivalent of HE effect (kg) 6.00 Weights (kg): launcher no more that 9.50 container with missile 13.80 thermal sight 6.50
* The explosion was a fuel-air explosion (aerosol explosion) of about 14-17kg TNT equivalent from the liquid petroleum gas leakage and was not due to an improvised explosive device.