The English word "experiment" traces its origins to the Latin term "experīmentum," which denotes a trial, test, or proof. This Latin noun derives from the verb "experīrī," meaning "to try," "to test," or "to put to the proof." The verb itself is a compound formed from the prefix "ex-" meaning "out" or "thoroughly," combined with an archaic verb "*perīrī," which carries the sense "to go through" or "to attempt." The precise form "*perīrī" is not directly attested but is reconstructed based on related Latin words and their semantic fields. This root is closely connected to "perītus," meaning "experienced" or "skilled," and "perīculum," meaning "trial," "danger," or "risk," which is the source of the English word "peril."
The ultimate origin of these Latin elements lies in the Proto-Indo-European (PIE) root *per-, which conveys notions of trying, risking, or leading through. This root is foundational to a semantic field encompassing attempts, trials, and experiences that involve some degree of risk or testing. The connection between "experiment" and related English words such as "experience," "expert," and "peril" is thus etymologically grounded in this PIE root. For example, "experience" reflects what one
The term "experiment" entered the English language around the mid-fourteenth century, approximately c. 1350, borrowed from Old French "experiment," which itself was derived from Latin "experīmentum." In Middle English, the word carried dual senses: it referred both to a test or trial and to experience or knowledge gained through such trials. This dual meaning reflects the broader
Over time, the meaning of "experiment" in English underwent a process of semantic narrowing, particularly during the Scientific Revolution of the seventeenth century. Prior to this period, "experiment" could denote any kind of trial or practical test, often informal or anecdotal. However, the rise of modern science brought a more rigorous and systematic understanding of experimentation. This shift is notably associated with Francis Bacon, whose work
Thus, the modern sense of "experiment" as a carefully designed scientific procedure undertaken to discover new facts, test hypotheses, or demonstrate known principles solidified in the seventeenth century. This specialized meaning distinguishes it from its earlier, broader uses related to general experience or informal trials. The verb form "to experiment," meaning to carry out such procedures, naturally developed alongside the noun, reflecting the active engagement in testing and discovery.
In summary, the English word "experiment" is a borrowing from Old French, ultimately rooted in Latin "experīmentum," itself derived from "experīrī," a compound of "ex-" and the archaic verb "*perīrī." This lineage connects the word to a Proto-Indo-European root *per-, which encompasses the ideas of trying, risking, and undergoing trials. The semantic evolution from a general sense of trial and experience to the precise scientific meaning known today was largely shaped during the early modern period, particularly through the influence of Baconian philosophy. The