Engine knocking (current) C-symmetry Ubuntu-restricted-extras Patch dynamics Party of Development and Consolidation of Moldova Obsessive Compulsive Disorder Scientific visualization Portrait of a Man in a Red Cap Code page 921 Statistical model validation Overloading (chess) Banana split Arrernte Sign Language John Reeves (judge) Intersecting chords theorem Matrix transpose DeviceNet Interrogative word Shear-wave elasticity imaging Secretary of Social Welfare and Development