equivalent weight

American  

noun

Chemistry.

1. the combining power, especially in grams gram equivalent, of an element or compound, equivalent to hydrogen as a standard of 1.00797 or oxygen as a standard of 8; the atomic weight divided by the valence.

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equivalent weight British  

noun

1. Also called: gram equivalent.  the weight of an element or compound that will combine with or displace 8 grams of oxygen or 1.007 97 grams of hydrogen

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Etymology

Origin of equivalent weight

First recorded in 1925–30

Example Sentences

In 2021, the company, according to its own annual report, used more than 750,000 metric tons of plastic containers for its products — the equivalent weight of 74 Eiffel Towers.

From Salon • Jan. 19, 2023

“The training also encourages offices to use social media to communicate both hazards with equivalent weight, to make it clear that both threats are possible during an event,” Boustead said.

From Washington Post • May 4, 2022

That’s the equivalent weight of two Airbus A380s, the world’s largest passenger airliner, going into the air every second.

From Seattle Times • Dec. 3, 2019

It's the equivalent weight of almost four London buses.

From BBC • Jul. 12, 2019

According to the same law, a certain weight of soda would always require a certain specific equivalent weight of an acid, say hydrochloric acid, to neutralise its alkaline or basic properties, producing a salt.

From The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association by Shonk, Albert