Noun: bitter orange 'bi-tu(r) 'or-unj or 'bi-tu(r) 'ór-inj [N. Amer], 'bi-tu(r) 'ó-rinj [Brit]
- Highly acidic orange used especially in marmalade
"She made marmalade from bitter oranges";
- Seville orange, sour orange
- Any of various common orange trees yielding sour or bitter fruit; used as grafting stock
"They made traditional marmalade from bitter oranges"; "Bitter orange trees are commonly used as rootstock for sweet orange varieties";
- sour orange, Seville orange, bitter orange tree, bigarade, marmalade orange, Citrus aurantium
Derived forms: bitter oranges
Type of: orange, orange tree
Part of: genus Citrus
Encyclopedia: Bitter orange