Answer: ency

AnswerCrossword Clue
ENCYNoun suffix.
ENCYSuffix with "consist"
ENCYSuffix with "depend"
ENCYSuffix with depend
ENCYRef. set
ENCYNoun suffix
ENCYComprehensive work: Abbr.
ENCYRef. book.
ENCYReference work: Abbr.
ENCYReference book: Abbr.
ENCYRef. work
ENCY"World Book", e.g.: Abbr.
ENCYBritannica, for one (abbr.)
ENCYWikipedia, for one (abbr.)
ENCYRef. book
ENCYDepend add-on
ENCYSuffix with consist
ENCY"Wikipedia", for ex.
ENCYReference bk.
ENCYLarge ref. work