noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An odorless organophosphate insecticide, C₈H₂₄N₄O₃P₂, that has also been used to treat myasthenia gravis. uncountable

Synonyms

All synonyms

ompaschradan

Etymology

From octa- + methyl- + pyro- + phosphoramide.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.