AUXANOMETER
AUXANOMETERS
AUXESES
AUXESIS
AUXETIC
AUXETICS
AUXILIAR
AUXILIARIES
AUXILIARS
AUXILIARY
AUXIN
AUXINIC
AUXINS
AUXOCHROME
AUXOCHROMES
AUXOCYTE
AUXOCYTES
AUXOMETER
AUXOMETERS
AUXOSPORE
AUXOSPORES
AUXOTONIC
AUXOTROPH
AUXOTROPHIC
AUXOTROPHIES
AUXOTROPHS
AUXOTROPHY

27 words start with AUX.