Definition of Orimulsion in US English:

Orimulsion

noun

trademark in US
  • A fuel consisting of an emulsion of bitumen in water.

    • ‘Orimulsion is a bitumen and water mixture mined in Venezuela.’
    • ‘The facility closed with the loss of hundreds of jobs after a bid to burn the controversial fuel Orimulsion at the plant failed.’
    • ‘Orimulsion, a bitumen-in-water emulsified fuel produced in Venezuela, has shown increased use throughout the world as a replacement for heavy fuel oil’

Origin

1980s: blend of Orinoco (the name of an oil belt in Venezuela, where the bitumen was originally extracted) and emulsion.

Pronunciation

Orimulsion

/ˌôrəˈməlSH(ə)n/