Definition of opale:
		
              °from the precious stone, invented in the nineteenth century.
            
            
            
          
            
              °A type of 
petrol made by the BP company designed to be unable to used for 
petrol sniffing. (Reference: BP article on Opal .).
            
 
	 
 
		
		
		Definition of opale:
		
              °from the precious stone, invented in the nineteenth century.
            
            
            
          
            
              °A type of 
petrol made by the BP company designed to be unable to used for 
petrol sniffing. (Reference: BP article on Opal .).