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)

• kith
• kith and kin
• kithara
• kithe
• kithed
• kithes
• kithing
• kiths
• kiting
• kitings
• kitling
• kitlings
• kits
• kitsch
• kitsches
• kitschier
• kitschiest
• kitschily
• kitschiness
• kitschness
• kitschy
• kitted
• kitten
• kittened
• kitten heel