Hazardous hydrogen Synonyms

Hazardous replaced

Definitions for Hazardous


  • (adjective) involving potential loss or injury
  • (adjective) involving risk or danger

Synonyms for phrase

HH abbreviation

HH is an abbreviation for Hazardous Hydrogen
What does HH stand for?
HH stands for "Hazardous Hydrogen"

Hydrogen replaced

Definitions for Hydrogen


  • (noun) a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe