cofactor /kō-fakˈtər/

1. A factor which occurs along with other factors in multiplication
2. A nonprotein organic molecule or a metallic ion that binds with an enzyme and is essential to the enzyme's activity (biology)

• galactorrhoea
• galactorrhoeas
• galactosaemia
• galactosaemias
• galactose
• galactoses
• gala-dress
• galage
• galago
• galagos
• galah
• Galahad
• galahs
• Galam butter
• galanga
• galangal
• galant
• galantamine
• galantine
• galantines
• galanty show
• galanty shows
• galapago
• galapagos
• galas