渦状 is read as かじょう (kajou) and means spiral.
かじょう
kajou
うずまきじょう
spiral
かじょうもん
spiral pattern
かじょうぎんが
spiral galaxy
うずまき
spiral (shape, pattern)
かちゅう
vortex
うず
whirlpool
うずまく
to be all jumbled together (feelings, thoughts, etc.)
うずでんりゅう
eddy current
うずけいしき
vortex design
かどう
うずまきぎんが
ねんがじょう
New Year's card