Answer:

abstract

Answer	Crossword Clue
ABSTRACT	Hard to understand
ABSTRACT	Like a Jackson Pollock painting
ABSTRACT	Not practical

ABSTRACT	Summary.
ABSTRACT	Designating some painting.
ABSTRACT	Summarize.
ABSTRACT	Kind of painting.
ABSTRACT	Brief
ABSTRACT	Theoretical
ABSTRACT	Like some art
ABSTRACT	Certain art

ABSTRACT	Speech summary
ABSTRACT	Existing in the mind only
ABSTRACT	Part of a science journal