“accretion, n.”. OED Online. March 2017. Oxford University Press. http://www.oed.com/view/Entry/1239 (accessed April 09, 2017).
b. In non-physical and figurative contexts.
a1684 R. Leighton (1693) I. 238 To desire the Word for the increase of knowledge..is necessary and commendable, and being rightly qualified is a part of spiritual accretion.
1714 tr. C. I. C. de Saint-Pierre iv. 146 This society must in time..arrive at its whole Accretion, and its entire Settlement.
1859 A. Helps New Ser. II. x. 232 The tendency of all power is to accretion, and indeed, to very rapid accretion.
1900 12 May 342/2 They found that the total accretion of Fellows in the fifty years from 1850 to 1900 was 498.
2002 May 25/3 Despite his accretion of power, the elevation of their archrival to the office of regent was the saving of the Gordons.
“institute, v.”. OED Online. March 2017. Oxford University Press. http://www.oed.com/viewdictionaryentry/Entry/97107 (accessed April 09, 2017).