Answer:

ENCY

Answer	Crossword Clue
ENCY	Ref. work
ENCY	Large ref. work
ENCY	Reference bk.

ENCY	"Wikipedia", for ex.
ENCY	Suffix with consist
ENCY	Depend add-on
ENCY	Ref. book
ENCY	Wikipedia, for one (abbr.)
ENCY	Britannica, for one (abbr.)
ENCY	"World Book", e.g.: Abbr.
ENCY	Noun suffix.

ENCY	Reference book: Abbr.
ENCY	Reference work: Abbr.
ENCY	Ref. book.
ENCY	Comprehensive work: Abbr.
ENCY	Noun suffix
ENCY	Ref. set
ENCY	Suffix with depend
ENCY	Suffix with "depend"

ENCY	Suffix with "consist"

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.