E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
N added to Greek words ending in a short vowel to lengthen it by position, and l added to French words beginning with a vowel,
when they follow a word ending with a vowel (as si lon for si on), is called N or L ephelcystic (tagged-on); Greek, epi helko. (See MARKS IN GRAMMAR.)