|the branch of engineering concerned with the design, operation, maintenance, and manufacture of the plant and machinery used in industrial chemical processes|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|a scrap or morsel of food left at a meal.|
The branch of engineering that deals with the manufacture of products through chemical processes. These products include, among others, pharmaceuticals, pulp and paper, petrochemicals, microelectronic devices, polymers, and products used in food processing and in biotechnology.