[@@@ an example of how middle consonants frequently vanished in clusters, ndr > nr rather than dr (PE22/36); this specific change did not occur in later Sindarin (e.g. Andras)]
Noldorin
anrand
noun. cycle, age (100 Valian Years)
anrand
noun. cycle, age, (lit.) long cycle
rhand
noun. cycle
Helge Fauskanger noted that the element and "long" would normally be preserved before r-, but the -d is lost because there is another d in the word (VT/41:9); however, this second d later disappeared in the change from -nd to -nn, and it is unclear whether or not an- would then revert to and-