1. of, relating to, or resembling citrus fruits or their characteristics
Usage: technical or botanical usage
2. having a yellow or greenish-yellow color like that of citrus fruits
Usage: rare or literary

Examples

• The citreous aroma filled the kitchen as she squeezed fresh lemons.
• The plant's citreous leaves were bright and glossy.
• A citreous hue dominated the sunset over the orchard.
• The juice had a distinctly citreous flavor with notes of lime and lemon.