to make a statement or assertion, especially an authoritative statement (often followed by on ): He was required to pronounce on the findings of his research.
10.
to give an opinion or decision (usually followed by on ): to pronounce on an important matter.
early 14c., "to utter, declare officially," from O.Fr. pronuncier (late 13c.), from L.L. pronunciare, from L. pronuntiare "to proclaim, announce, pronounce," from pro- "forth, out, in public" + nuntiare "announce," from nuntius "messenger" (see nuncio). With ref. to the mode
of sounding words or languages, it is attested from c.1620 (but cf. pronunciation in this sense early 15c.). Pronounced, with the fig. meaning "emphatic," first attested c.1730.