products, armaments, health care, public infrastructure, and environmental protection. Etymology The word science has been used in Middle English since the 14th century in the sense of "the state of knowing". The word was borrowed from the Anglo-Norman language as the suffix , which was borrowed from the Latin word , meaning "knowledge, awareness, understanding". It is a noun derivative of the Latin meaning "knowing", and undisputedly derived from the Latin , the present participle , meaning "to know". There are many hypotheses for science's ultimate word origin. According to Michiel de Vaan, Dutch linguist and Indo-Europeanist, may have its origin in the Proto-Italic language as or meaning "to know", which may originate from Proto-Indo-European language as , , meaning "to incise". The Lexikon der indogermanischen Verben proposed is a back-formation of , meaning "to not know, be unfamiliar with", which may derive from Proto-Indo-European in Latin , or , from meaning "to cut". In the past, science was a synonym for "knowledge" or "study", in keeping with its Latin origin. A person who conducted scientific research was called a "natural philosopher" or "man of science". In 1834, William Whewell introduced the term scientist in a review of Mary Somerville's book On the Connexion of the Physical Sciences, crediting it to "some ingenious gentleman" (possibly himself). History Early history Science has no single origin. Rather, systematic methods emerged gradually over the course of tens of thousands of years, taking different forms around the world, and few details are known about the very earliest developments. Women likely played a central role in prehistoric science, as did religious rituals. Some scholars use the term "protoscience" to label activities in the past that resemble modern science in some but not all features; however, this label has also been criticized as denigrating or too suggestive of presentism, thinking about those activities only in relation to modern categories. Direct evidence for scientific processes becomes clearer with the advent of writing systems in early civilizations like Ancient Egypt and Mesopotamia, creating the earliest written records in the history of science in around 3000 to 1200 BCE. Although the words and concepts of "science" and "nature" were not part of the conceptual landscape at the time, the ancient Egyptians and Mesopotamians made contributions that would later find a place in Greek and medieval science: mathematics, astronomy, and medicine. From the 3rd millennium BCE, the ancient Egyptians developed