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a. Containing or being a poison: poisonous fumes.
b. Capable of harming or killing by poison: poisonous tentacles.
a. Full of ill will; malicious or spiteful: a poisonous look.
b. Harmful or destructive: a poisonous precedent.

poi′son·ous·ly adv.
poi′son·ous·ness n.
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References in periodicals archive ?
Milk is considered a natural anti-toxin, and it can be used to reduce the severity of poisonousness in the body.
Even so, accumulational soluble A[sz] oligomer can damage synaptic junction and generate neurovirulence.[9] In pathology situation, the unbalance between the production and clearance rate of A[sz] can lead to its sedimentation, causing for AD to happen using tau protein poisonousness, destroying intracellular calcium homeostasis and cholinergic nerve system, inducing neurofibrillary tangles (NFTs), etc., Hence reducing A[sz] deposition can improve AD of a large extent and make it possible the targeted therapy of AD in allusion to A[sz], such as A[sz] antibody and beta-secretase cleaving enzyme (BACE) inhibitor.
Moreover, due to their poisonousness, carcinogenicity to living beings, and the risk to homeland safety, they cause serious intimidations to our lives [2].