יִתְרוֹן, surplus, difference. Koh. R. to II, 13 כשם שיש י׳ בין וכ׳ as there is a difference between light &c.
יִתְרוֹן, addition. Lev. R. s. 22 (ref. to Koh. V, 8) אפי׳ דברים … י׳ למ"ת even what thou deemest to be an addition to the original Law (Koh. R. to V, 8, a. e. מיותרין).
יִתְרוֹן, superfluity, useless thing. Ib. אפי׳ … י׳ בעולם even what thou mightest deem to be mere useless creatures (Koh. R. to V, 8, a. e. מיותרין), v. יָתַר.