Invention/ɪnˈvenʃn/ Definition 1 of 3Pro Tip 1/3Historical Impact Inventions often change history and impact daily life significantly. The invention of the internet revolutionized how we communicate. Pro Tip 2/3Not Always Objects Inventions can be concepts or methods, not just physical items. The invention of algebra was a milestone in mathematics. Pro Tip 3/3Patent Associated Inventions can be patented to protect the rights of the inventor. After her invention, she applied for a patent to safeguard her work.