hazardous
Very likely to cause harm, injury, or serious problems.
Involving a significant chance of harm, injury, damage, or other serious negative consequences.
- Base: hazardous
hazardous area
1area where it is dangerous
A place where there is a serious risk of accident, injury, or other harm.
- Warning signs mark the hazardous areas near the cliff edge.
- Unauthorized personnel are not allowed to enter the hazardous area of the plant.
hazardous chemicals
1dangerous chemical substances
Chemical substances that can seriously harm people or the environment if they are used, stored, or released in the wrong way.
- Workers must wear gloves when handling hazardous chemicals.
- The company was fined for releasing hazardous chemicals into the river.
hazardous conditions
1dangerous environmental conditions
Situations in the environment or at work that can easily cause accidents, injuries, or other serious harm.
- The factory was closed due to hazardous conditions inside the building.
- Heavy snow created hazardous conditions on the highway.
hazardous duty
1work that is especially dangerous
Work tasks or jobs that involve a high level of danger, often giving the worker extra pay.
- Soldiers on hazardous duty receive additional compensation.
- The bonus is meant to cover the risks of hazardous duty at the construction site.
hazardous journey
1trip with serious dangers
A trip or travel that is very dangerous because of conditions, violence, or other risks.
- They began a hazardous journey across the desert.
- Many migrants make a hazardous journey by sea in search of safety.
hazardous materials
1materials that are dangerous
Substances or products that are dangerous to people, animals, or the environment, such as chemicals, gases, or explosives.
- Only trained staff are allowed to handle hazardous materials in this laboratory.
- Trucks carrying hazardous materials are not allowed to use this tunnel.
hazardous occupation
1job that is very dangerous
A job where workers face a high chance of injury or death.
- Fishing in deep waters is considered one of the most hazardous occupations.
- Many hazardous occupations require workers to wear protective clothing.
hazardous substances
1substances officially classed as hazardous
Substances that are officially listed or treated as dangerous because they can harm people or the environment.
- Employers must keep a record of all hazardous substances used in the workplace.
- Special labels are required for containers that hold hazardous substances.
hazardous to health
1dangerous for a person's health
Likely to cause serious illness or other health problems.
- Long-term exposure to this level of noise is hazardous to health.
- The label clearly states that the product may be hazardous to health if swallowed.
hazardous waste
1dangerous or toxic waste
Waste materials that can seriously harm people or the environment because they are poisonous, explosive, or otherwise very dangerous.
- Hospitals must dispose of hazardous waste in special containers.
- The new law sets strict rules for transporting hazardous waste across the country.