quarter-wavelength
quartic
quartile
quarto
quartz
quartz-crystal
quartz-crystal-controlled
quartz-halogen
quartz-melting
quartz-sand-filled
  quartz-type
quasi
quasi-biennial
quasi-circular
quasicircular
quasi-conductor
quasi-constant-density
quasi-continuous
quasi-cyclic
quasi-dielectric
quasi-equilibrium