How did the term impressionism originated what did it mean?

The term "impressionism" originated from a derogatory critique of Claude Monet's painting "Impression, Sunrise," exhibited in 1874. The name was derived from the Word "impression," suggesting that the artwork captured a fleeting moment or sensation rather than a detailed, realistic depiction. This style emphasized light, color, and the effects of atmosphere, marking a departure from traditional artistic conventions. Over time, the term became embraced by the artists themselves and came to represent a significant movement in the history of art.