1. of, relating to, or resembling a calyx (the outer whorl of leaf-like structures at the base of a flower)
Usage: botanical term; also spelled 'calyxal' or 'calycinous'

Examples

• The calycinal leaves protect the developing flower bud.
• Botanists examined the calycinal structures under the microscope.
• The calycinal sepals remained attached to the fruit after flowering.
• This species has distinctive calycinal lobes that aid in identification.