noun
fillet
A rounded transition at an inside corner between two surfaces.
A small fillet smooths the inside corner of the bracket.
Etymology
Fillet developed from a word for a narrow strip. In construction and engineering, it names the material or curved surface that fills and smooths an inside angle.
More examples
- The designer adds a fillet where the two surfaces meet.
- These fillets reduce stress at the casting’s inside corners.
- The drawing specifies a quarter-inch radius for each fillet.
Forms
fillet · fillets
Similar words
- cove
- Usually a broader concave curve, especially in architectural moldings.