surname

a noun that a child inherits from a social institution, usually his family of orientation, i.e., as a family name, or that woman might inherit from her family of procreation i.e., as a married name; a s. may also take the form of 1) a clan name, 2) a domain name, 3) a title; in some cultures a person may carry one or more additional surnames (or change its customary spelling or form) later in life, cf. alias; the s. is introduced in PS-RULE [PS6]; in some cases we use “surname” where the more specific reference would be surname piece or surname phrase