From the same as Otnniy and 'el; force of God; Othniel, an Israelite -- Othniel.
see HEBREW Otnniy
see HEBREW 'el
H6274. Othniel
עָתְנִיאֵל proper name, masculine son of Kenaz, a hero in Israel, Γοθονιηλ, Joshua 15:17; Judges 1:13; 3:9, 11; 1 Chronicles 4:13 (twice in verse); name of family 27:15.