1. A small cup-shaped or tubular structure in plants, typically a reduced or secondary calyx.
Usage: botanical term; plural: calyculuses or calyculī
2. In zoology, a small cup-shaped anatomical structure or appendage in certain animals.
Usage: zoological term; technical

Examples

• The calyculus of the flower provides additional protection to the developing bud.
• Botanists examined the calyculus to classify the plant species accurately.
• The calyculus is positioned just below the main calyx in this genus.
• Under magnification, the calyculus revealed fine structural details.
• The presence of a calyculus distinguishes this plant family from related groups.