Entry 4 senses · 2 variants Webster, 1913 Extern · Ex·tern · IPA /ˈɛkˌstɜː(ɹ)n/ a. n. 01 a. External; outward; not inherent. 1. External; outward; not inherent.[Obs.] 02 n. A pupil in a seminary who lives without its walls; a day scholar. 1. A pupil in a seminary who lives without its walls; a day scholar. 2. Outward form or part; exterior.[R.] 3. same as externe. See: externe