Nanotechnology refers to technology engineered at the nanoscale, specifically at dimensions of 10^-9 meters. The U.S. federal government has established a legal definition for nanotechnology, which includes systems with at least one dimension under 100 nanometers. This definition emerged alongside the introduction of grants to support research in the field. While Wikipedia can provide a general overview, caution is advised when seeking precise information. Understanding nanotechnology is crucial as it plays a significant role in various scientific and industrial applications.