The older term for number theory is "arithmetic". By the early twentieth century, it had been superseded by "number theory". (The word "arithmetic" is used by the general public to mean "elementary calculations"; it has also acquired other meanings in mathematical logic, as in "Peano arithmetic", and computer science, as in "floating point arithmetic".) The use of the term "arithmetic" for "number theory" regained some ground in the second half of the 20th century, arguably in part due to French influence. In particular, "arithmetical" is commonly preferred as an adjective to "number-theoretic".