1. of, relating to, or belonging to the pine family (Pinaceae) of coniferous trees and shrubs
Usage: botanical term; formal

Examples

• The pinaceous forests of the Pacific Northwest are dominated by Douglas fir and spruce.
• Pinaceous trees are characterized by needle-like leaves and woody cones.
• The botanist studied pinaceous species to understand their adaptation to cold climates.
• Many pinaceous plants produce valuable timber and resin products.
• The pinaceous family includes pines, firs, spruces, and larches.