From yatsa'; issue, i.e. Offspring -- those that came forth.
see HEBREW yatsa'
H3329. yatsi
[יָצִיא] adjective coming forth; only with מִן and suffix, מֵעָיו ומיציאו2 Chronicles 32:21 Kt (וּמִיצִיאֵי Qr), and some of those who came forth from his loins (בניו in "" Isaiah 37:38).