abacus /abˈə-kəs/

1. A counting frame, consisting of horizontal rods along which movable beads can be slid
2. A level tablet on the capital of a column, supporting the entablature (architecture)

• fibrillated
• fibrillates
• fibrillating
• fibrillation
• fibrillations
• fibrillin
• fibrillins
• fibrillose
• fibrillous
• fibrils
• fibrin
• fibrinogen
• fibrinogens
• fibrinoid
• fibrinoids
• fibrinolysin
• fibrinolysins
• fibrinolysis
• fibrinous
• fibrins
• fibro
• fibroblast
• fibroblastic
• fibroblasts
• fibrocartilage