Definition of "jargonistic"

Policemen are forever being modest, jargonistic, officialese.

1973, David A. Hansen, Thomas R. Culley, The police training officer

Note that Hamill shrewdly opts for the awkward phrase "sexual lifestyle" rather than "sexual orientation." He does so because it allows him to imply what he knows better than to assert: that sexual preference is simply a matter of rational choice. Whatever the jargonistic catchphrase "sexual lifestyle" may connote, it does not signify sexual orientation, because even Denis Hamill knows that neither he nor we sat down, surveyed our options, and then consciously chose to be either straight or gay.

1980 August 2, Lee Edelman, Joseph Litvak, “"Are Homosexual Murders Given Preference By City Hall?"”, in Gay Community News, page 5