içindek
İçindek is a term observed in some Turkish-language texts as a nonstandard abbreviated form related to içindekiler, which means “contents” or “the things inside.” It does not have an entry in major Turkish dictionaries and is not generally treated as a separate lexical item in formal Turkish.
Etymology and usage: The form appears to derive from iç (inside) combined with a truncated suffix pattern
Standards and editors: In formal writing, içindek is typically avoided and replaced with içindekiler when referring