N. odhron n. “parent” (Category: Parent)
A noun in The Etymologies of the 1930s glossed “parent” derived from the root ᴹ√ONO “beget” (Ety/ONO), where [nr] became [ðr]. It was originally based on primitive ᴹ✶onrō, but suffixal -ro did not survive in Noldorin/Sindarin, and was replaced by other agental suffixes like -ron.
Reference ✧ Ety/ONO ✧ “parent”
|ᴹ✶onrō > odhron||[onrondo] > [onrond] > [oðrond] > [oðronn] > [oðron]||✧ Ety/ONO|