iodide

American  

[ahy-uh-dahyd, -did] / ˈaɪ əˌdaɪd, -dɪd /

noun

Chemistry.

1. a salt of hydriodic acid consisting of two elements, one of which is iodine, as sodium iodide, NaI.

2. a compound containing iodine, as methyl iodide.

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iodide British  

/ ˈaɪəˌdaɪd /

noun

1. a salt of hydriodic acid, containing the iodide ion, I ^–

2. a compound containing an iodine atom, such as methyl iodide, CH 3 I

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iodide Scientific  

/ ī′ə-dīd′ /

1. A chemical compound consisting of iodine together with another element or radical.

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Other Word Forms

• subiodide
  noun

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Etymology

Origin of iodide

First recorded in 1815–25; iod- + -ide ( def. )

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Compare meaning

How does iodide compare to similar and commonly confused words? Explore the most common comparisons:

• iodide vs. iodine

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Example Sentences

See Examples For:

iodide

While still undergoing tests at Texas A&M University, this new seeding agent moves Recast away from silver iodide as the go-to compound.

From BBC ● Oct. 7, 2026

Cloud seeding involves manipulating existing clouds, such as by dropping salt crystals or silver iodide into them, to help produce more rain.

From BBC ● Sep. 23, 2026

The process involves spraying particles such as silver iodide and salt into clouds from aircraft to produce rainfall, and is widely used to affect weather patterns or even tamp down air pollution.

From Barron's ● May 8, 2026

The international research group identified a previously unknown magnetic state in a material made of four atomic layers of chromium iodide.

From Science Daily ● Feb. 13, 2026

But in the event of a nuclear accident, people who may be exposed to iodine 131 can take potassium iodide tablets, which provide enough non-radioactive iodine 127 to saturate the thyroid.

From "Meltdown" by Deirdre Langeland

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