1. A small capital or head-like structure, especially the uppermost part of a column or pilaster in architecture.
Usage: architecture; plural: capitellae or capitellas
2. In biology, a small head-shaped structure or knob at the end of an organism or anatomical part.
Usage: biology; anatomy; plural: capitellae or capitellas

Examples

• The capitella of the Doric columns displayed classical proportions.
• Each capitella was carved with intricate decorative details.
• The architect examined the capitella to ensure structural integrity.
• In the microscope, the capitella of the organism appeared as a distinct rounded projection.
• The restoration team carefully cleaned the capitella of dust and debris.