Answer:

multi

Answer	Crossword Clue
MULTI	Directional or dimensional starter
MULTI	Starter on millionaire
MULTI	Hardly uni-

MULTI	Prefix with national
MULTI	Poly- kin
MULTI	Poly- equivalent
MULTI	Prefix with grain
MULTI	Media lead-in
MULTI	Prefix with millionaire
MULTI	Millionaire's intro?
MULTI	Prefix with cellular or cultural

MULTI	Prefix with faceted or cultural
MULTI	Prefix with vitamin
MULTI	Lead-in to millionaire or vitamin
MULTI	Millionaire start
MULTI	Millionaire starter?
MULTI	Poly- relative
MULTI	Prefix for task
MULTI	Prefix for vitamin

MULTI	Prefix for millionaire
MULTI	Prefix with grain and lane
MULTI	Prefix with family or room
MULTI	Many: Comb. form.
MULTI	Numerous: Comb. form.
MULTI	More than two: Comb. form.
MULTI	Many times over: Prefix.
MULTI	Many: Prefix.

MULTI	Many times more than: Prefix.
MULTI	Prefix for ply or tude
MULTI	Kind of millionaire
MULTI	Prefix similar to poly
MULTI	Prefix for fold or graph
MULTI	Prefix for lateral
MULTI	Start for millionaire
MULTI	Having many: Comb. form

MULTI	Prefix with fold or level
MULTI	Many: Comb. form
MULTI	Many: Prefix
MULTI	Prefix for lingual
MULTI	Vitamin start