Library / English Dictionary

POISONOUS SUBSTANCE

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Any substance that causes injury or illness or death of a living organism

Synonyms:

poison; poisonous substance; toxicant

Classified under:

Nouns denoting substances

Hypernyms ("poisonous substance" is a kind of...):

substance (a particular kind or species of matter with uniform properties)

Hyponyms (each of the following is a kind of "poisonous substance"):

atropine (a poisonous crystalline alkaloid extracted from the nightshade family; used as an antispasmodic and to dilate the eye pupil; also administered in large amounts as an antidote for organophosphate nerve agents or organophosphate insecticides)

hyoscyamine (a poisonous crystalline alkaloid (isometric with atropine but more potent); used to treat excess motility of the gastrointestinal tract)

toxin (a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species)

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