- Relating to or denoting plants of the rose family (Rosaceae).More example sentences
- Peachblossom is a rosaceous plant with five petals.
- This is most clear in rosaceous fruit trees that go dormant in preparation for winter, and not in response to environmental cues.
mid 18th century: from modern Latin Rosaceae (based on Latin rosa 'rose') + -ous.
More definitions of rosaceousDefinition of rosaceous in:
- The US English dictionary