Patronymically from Yishma'e'l; a Jishmaelite or descendant of Jishmael -- Ishmaelite.
see HEBREW Yishma'e'l
H3459. Yishmeeli
יִשְׁמְעֵאלִי adjective, of a people of ׳יִשׁ
1; — singular with article ׳הַיִשׁ 1 Chronicles 2:17 + "" 2 Samuel 17:25 (so read for. ׳הַיִּשְׂרָאֵלִ, see Commentaries); הַיִּשְׁמְעֵלִי 1 Chronicles 27:30; plural (הַ)יִשְׁמְעֵאלִים Ishmaelites Genesis 37:25, 27; 35:28; 39:1; Judges 8:24; Psalm 83:7.