Who coined the word Micro economics?

The term "microeconomics" was popularized by the economist Ragnar Frisch in the early 20th century, particularly in the 1930s. While the concept of analyzing individual economic agents had existed prior to this, Frisch's work helped formalize and differentiate microeconomics from macroeconomics. His contributions laid the groundwork for further developments in economic theory, particularly in understanding the behavior of individuals and firms.