Title of an essay on the mental-communication abilities of the Elves, with the English translation “Communication of Thought” (MR/415). Elsewhere, the word ósanwë by itself is translated “communication of thought” or “interchange of thought” (VT39/23-4, PE17/183). Furthermore, in the title of another essay, centa is translated “enquiry”: Essecenta Eldarinwa “Enquiry (into the origins) of the Elvish names” (MR/415, WJ/359). Thus, the full meaning of this title is likely “Enquiry into Communication of Thought”.
Quenya
centa
communication, enquiry, *essay
centa
noun. enquiry, *essay
ósanwe-centa
proper name. [Enquiry into] Communication of Thought
centa noun "communication, enquiry, *essay"; Ósanwë-centa ("k") "Communication of Thought", an appendix to Pengolodh's Lammas or "Account of Tongues" (VT39:23, MR:415); cf. also essecenta, q.v.