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

Etymology

Origin of iodide

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

Compare meaning

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

• iodide vs. iodine

Example Sentences

See Examples For:

iodide

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

By combining advanced electron microscopy with neural networks, the team recorded a silver iodide crystal as it melted while being protected by layers of graphene.

From Science Daily ● Jan. 26, 2026

Traditionally, cloud-seeding operations flew planes into clouds and used flares that contained silver iodide.

From The Wall Street Journal ● Dec. 4, 2025

Cloud seeding involves injecting chemical salts including silver or potassium iodide into clouds via aircraft or through generators on the ground.

From BBC ● Nov. 16, 2025

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