unigeniture

Etymology
From, from +.

Noun

 * 1)  The state of being the sole begotten.
 * 2) * 1868, Rev. J. Gorle, An Analysis of Pearson on the Creed
 * Though therefore Christ be the only-begotten and the beloved Son of God, we must not regard these two attributes as equivalent in meaning, but as one depending on the other, the singular love on the unigeniture.