1. Having small pinnae or leaflets arranged along a central axis; finely pinnate.
Usage: botanical term; used to describe leaves or fronds with a delicate, feathery structure

Examples

• The fern's pinnulate fronds unfurled gracefully in the shade.
• Botanists examined the pinnulate structure of the compound leaf under magnification.
• The plant displayed pinnulate foliage characteristic of the Mimosa genus.
• The delicate, pinnulate leaflets gave the shrub an elegant appearance.