Definition of arsenical in English:



  • Of or containing arsenic.

    ‘arsenical compounds’
    • ‘Quite apart from the risk of ingestion should you be so careless as to lick your brush, there was also the risk of breathing in fumes of arsenical dust which might be released during the mixing and heating in preparation of the pigment.’
    • ‘The men went away but several hours later the plaintiff's husband died from what was held to be arsenical poisoning.’
    • ‘Chemical lead, 1% antimonial lead, and arsenical lead are most commonly employed for this purpose.’
    • ‘In addition, it was hard to tell whether arsenical poisoning or any other therapy administered during the early stages of infection, really had a sufficiently beneficial long-term effect.’
    • ‘Exposure to inorganic arsenic has been linked to arsenical keratoses, squamous cell carcinoma in situ of the skin, and basal cell carcinoma.’
    • ‘Organic arsenical materials are still available for use; however, they no longer dominate the marketplace.’


  • An arsenical drug or other compound.

    ‘penicillin and certain other antibiotics have much lower toxicity than arsenicals’
    • ‘In general, organic arsenicals require a minimum of two applications, spaced 14 days apart, to have efficacy anywhere near that of most commercially available pre-emergence herbicides.’
    • ‘There is often a history of chemical or radiation exposure, with Thorotrast, vinyl chloride and arsenicals being commonly reported.’
    • ‘In the 75 years before World War II arsenicals were used to treat syphilis in sub-Saharan Africa and syringe use was tightly controlled.’
    • ‘Fruits and vegetables sprayed with arsenicals may be sources of this element.’
    • ‘Other drugs associated with cardiomyopathy include amphetamine sulfate, arsenicals, catecholamines, ephedrine sulfate, lithium carbonate, and mitomycin C.3’