Correct spelling for the English word "lancon" is [lˈankən], [lˈankən], [l_ˈa_n_k_ə_n] (IPA phonetic alphabet).
The word "lançon" does not have a well-established etymology as it seems to be a relatively rare or obsolete term. However, it can be derived from the Latin word "lancea", which means a lance or spear. "Lançon" may have originated from French or Old French, referring to a type of weapon or a lance-like object. It is worth noting that without additional context or usage examples, the exact etymology of "lançon" may be uncertain.