Standard Lemma guide

soman

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A highly toxic G-series nerve agent in the organophosphate class of chemical warfare agents. It works by irreversibly inhibiting acetylcholinesterase, an enzyme needed to regulate nerve signals, which leads to uncontrolled muscle activity and disruption of vital nervous system functions.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a nerve agent easily absorbed into the body; a lethal cholinesterase inhibitor that is highly toxic when inhaled

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: GD

Antonyms: none provided

Broader terms: organophosphate nerve agent

History

Etymology

No etymology was provided for this word.