different between poisonous vs pyrogallol

English

Etymology

From Middle English poisounous, poysonouse, equivalent to poison +? -ous.

Pronunciation

• IPA^(key): /?p??z?n?s/, /?p??zn?s/

Adjective

poisonous (comparative more poisonous, superlative most poisonous)

1. Containing sufficient poison to be dangerous to touch or ingest.

   Synonyms: poisoned, toxic, venomous, (dialectal or archaic) attery

   Antonyms: nonpoisonous, unpoisonous

2. (figuratively) Negative, harmful.

   Synonym: toxic

Usage notes

Some speakers make a distinction between poisonous (releasing toxins when eaten), and venomous (releasing toxins (known as venom in this case) by biting a target), especially in non-colloquial speech.

Derived terms

Translations

English

Etymology

From pyro- +? gallic +? -ol.

Pronunciation

Noun

pyrogallol (uncountable)

1. (organic chemistry) A poisonous trihydroxy phenol, 1,2,3-trihydroxybenzene, C₆H₃(OH)₃, used is a photographic developer.

   Synonym: pyrogallic acid

See also

• phloroglucinol 1,3,5-trihydroxybenzene
• hydroxyquinol 1,2,4-trihydroxybenzene