The creation of a new device, method, or idea — an invention; also the resulting invented object or method.
トムソンは電球の改良で大きな発明を成し遂げた。
Thomson achieved a major invention in improving the light bulb.
その発明は産業界に大きな影響を与えた。
That invention had a large impact on industry.
彼の発明は特許を取得して商品化された。
His invention was patented and commercialized.
子どもの自由な発想が思わぬ発明につながることもある。
A child's free thinking can sometimes lead to unexpected inventions.
An older/dated adjective meaning intelligent or clever; archaic usage in modern Japanese.
彼は発明の誉れ高き人物だ（古い文献での表現）。
He is described as a man of notable cleverness (expression from older literature).