Entry 3 senses · 2 variants Webster, 1913 Nigerian · IPA /naɪˈd͡ʒɪəɹɪən/ prop. n. prop. adj. 01 prop. n. A native or inhabitant of Nigeria. 1. A native or inhabitant of Nigeria. 02 prop. adj. of, pertaining to, or characteristic of the country Nigeria; as, The Nigerian capital used to be Lagos. 1. of, pertaining to, or characteristic of the country Nigeria; as, The Nigerian capital used to be Lagos. 2. Of, pertaining to, or characteristic of the inhabitants of Nigeria; as, A Nigerian novelist won the Noble Prize for literature this year.