What does fulminic mean?
Fulminic is a technical adjective meaning of or relating to fulminic acid, an unstable compound with the formula HCNO. The acid is rarely handled on its own because it decomposes readily, but its metallic salts — known as fulminates — are strikingly significant: mercury fulminate, for example, explodes on impact and served for over a century as the primer in percussion caps and blasting detonators. Because of this, the word fulminic lives almost entirely within the phrase 'fulminic acid' and related chemical contexts, and a general reader will rarely meet it elsewhere. Its name derives ultimately from the Latin fulmen, 'thunderbolt' or 'lightning flash', the same root behind the verb to fulminate, so the vocabulary of sudden violence is fitting for a substance associated with explosives. In register, fulminic is formal and scientific rather than literary; using it correctly signals familiarity with classical inorganic chemistry, and misusing it as a synonym for 'explosive' in general would be inaccurate.
adjectiveOf or relating to fulminic acid, an unstable acid whose salts (fulminates) are explosive; used almost exclusively in the chemical compound name 'fulminic acid'.
- Relating to or designating fulminic acid (HCNO), an unstable, explosive-forming acid known chiefly through its metallic salts called fulminates.
"The chemist handled mercury fulminate with care, knowing that fulminic acid's salts detonate at the slightest shock."
"Mercury fulminate, the best-known salt of fulminic acid, was widely used in percussion caps and blasting detonators."
"Although fulminic acid itself is too unstable to isolate easily, its salts made the chemistry of detonation possible."
Named after lightning — 'fulminic' comes from the Latin 'fulmen', meaning thunderbolt — this word belongs to an acid so volatile its mercury salt was once used to fire percussion caps.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fulminic
The adjective fulminic derives from New Latin, coined in the early 19th century when the acid and its salts were first characterised by chemists studying detonating compounds. It traces back to the Latin fulmen, meaning lightning or a thunderbolt, reflecting the violent, explosive nature of fulminates. The same root gives us the English words fulminate and fulmination, which broadened into figurative use for issuing fierce denunciations, while fulminic remained tied to chemistry.
How fulminic is actually used
Strictly a technical term of chemistry; outside discussions of fulminic acid and its fulminate salts it is virtually never encountered. Do not confuse it with 'fulminant' (medicine) or the verb 'to fulminate'.
Easily confused with fulminic
'Fulminant' is a medical term describing a disease that strikes suddenly and with severe intensity, whereas 'fulminic' refers specifically to the explosive chemistry of fulminic acid.
'Fuming' describes giving off visible vapour (as in fuming sulfuric acid), while 'fulminic' denotes relation to fulminic acid and its explosive salts.