by definition

by definition

because of the nature of someone or something Circus performers are, by definition, delightful show-offs and risk takers.

by definition

According to prior determination, as a given. For example, This antibiotic is by definition the most effective now on the market. [1970s]
References in periodicals archive ?
AIDS by definition is not new and is not a disease," the web site of HEAL Toronto declares.
This follows from the fact that, by definition, a position that has a reasonable basis is not a negligent position; see Regs.