Lecture 2 abortion: definiendum the terms that is being defined, definien the group of words or concepts used in the definition that is supposed to have the same. Stipulative definition: not used to explain the existing meaning of a term, used to assign a new meaning to a term, whether or not the terms already has a meaning. If the stipulative definition is accepted then the term is used in the new way that is prescribed. [m03] evaluating definitions fetus is already a person. It is important that the definition provided correctly captures the usage of the term that is defined: the definition should be neither too wide nor too narrow. Its too wide when the definiens applies to things that the definiendum does not apply to: the definition includes things that it should not. Necessary conditions: sometimes called an essential condition.