What does "toxin" mean?

A toxic substance, specifically a poison produced by the biological processes of organisms.

What is a synonym for "toxin"?

Common synonyms include: abomination, acaricide, aconite, anatoxin, anthelmintic, antibiotic.

/ˈtɒksɪn/ noun

noun ·Moderate ·College level

Noun

1
A toxic substance, specifically a poison produced by the biological processes of organisms.
"The blue-ringed octopus Hapalochlaena lunulata has tetrodotoxin, the deadly toxin it also releases in a bite, in their ink but the concentrations and effect in inking are not known."
2
a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species wordnet
3
Synonym of toxicant: a toxic substance in a body requiring removal. broadly, proscribed, usually

"The toxin that causes diphtheria is produced by a normally benign bacterium when infected with a certain virus."

From Latin toxicum, equivalent to toxi- + -in.