5 days ago · The meaning of POISONOUS is destructive, harmful. How to use poisonous in a sentence.

POISONOUS definition: 1. very harmful and able to cause illness or death: 2. A poisonous animal or insect uses poison in…. Learn more.

5 days ago · Synonyms for POISONOUS: poisoned, poison, toxic, venomous, harmful, infective, infectious, envenomed; Antonyms of POISONOUS: nontoxic, beneficial, helpful, healthy ...

Define poisonous. poisonous synonyms, poisonous pronunciation, poisonous translation, English dictionary definition of poisonous. adj. 1. a. Containing or being a poison: poisonous fumes. b. …

POISONOUS definition: full of or containing poison. See examples of poisonous used in a sentence.

The international pictogram for poisonous substances. The skull and crossbones has long been a standard symbol for poison. In science, a poison is any chemical substance that is harmful or lethal …

POISONOUS meaning: 1. very harmful and able to cause illness or death: 2. A poisonous animal or insect uses poison in…. Learn more.

Definition of poisonous in the Definitions.net dictionary. Meaning of poisonous. What does poisonous mean? Information and translations of poisonous in the most comprehensive dictionary definitions …

3 meanings: 1. having the effects or qualities of a poison 2. capable of killing or inflicting injury; venomous 3. corruptive.... Click for more definitions.

May 22, 2026 · Adjective poisonous (comparative more poisonous, superlative most poisonous) Containing sufficient poison to be dangerous to touch or ingest. Synonyms: poisoned, toxic, …