HAZARDOUS

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does hazardous mean? 

• HAZARDOUS (adjective)
  The adjective HAZARDOUS has 1 sense:

1. involving risk or danger

  Familiarity information: HAZARDOUS used as an adjective is very rare.

 Dictionary entry details 

• HAZARDOUS (adjective)

Sense 1

Meaning:

Involving risk or danger

Synonyms:

hazardous; risky; wild

Context example:

a wild financial scheme

Similar:

dangerous; unsafe (involving or causing danger or risk; liable to hurt or harm)

Derivation:

hazard (a source of danger; a possibility of incurring loss or misfortune)

hazardousness (the state of being dangerous)

 Context examples 

When a hazardous chemical has been released, it may harm people's health.

(Chemical Emergencies, Centers for Disease Control and Prevention)

This seeks to ensure that the devices being developed produce the least possible amount of waste, and that the materials involved generate the minimal hazardous substances.

(Scientists design devices to calculate the concentration of potassium in water, of creatinine in urine, or glucose in blood using smartphone technology, University of Granada)

In a new study, scientists state that any potential landing mission may have to navigate hazardous obstacles known as 'penitentes' before touching down on Europa's surface.

(Icy Warning for Space Missions to Jupiter's Moon, The Titi Tudorancea Bulletin)

When you throw these substances away, they become hazardous waste.

(Hazardous Waste, Environmental Protection Agency)

The Near-Earth Object Program, commonly called Spaceguard, discovers these objects, characterizes a subset of them and identifies their orbits to determine if any could be potentially hazardous to our planet.

(Asteroid discovered by NASA to pass Earth safely, NASA)

In September 2013, it was reactivated, renamed NEOWISE and assigned a new mission: to assist NASA's efforts to identify the population of potentially hazardous near-Earth objects.

(Asteroid-Hunting Spacecraft Delivers a Second Year of Data, NASA)

Things are getting desperate, and it is at least a chance, though a hazardous one.

(Dracula, by Bram Stoker)

Hazardous sound levels are louder than 80 decibels.

(Noise, NIH: National Institute on Deafness and Other Communication Disorders)

An international team led by Dr. Shaochen Chen at the University of California, San Diego, set out to develop a nanoparticle-based detoxification device that wouldn’t be hazardous to patients.

(3-D gel-nanoparticle device detoxifies blood, NIH)

Several years ago, Hurt began devising suits with graphene to protect workers against hazardous chemicals at environmental clean-up sites.

(Graphene shield shows promise in blocking mosquito bites, National Institutes of Health)