Definition

1. Noun:
   • A type of sour orange: "bitter orange" refers to a specific citrus fruit (Citrus × aurantium) that is highly acidic and less sweet than common oranges. Its peel and fruit are notably aromatic and bitter.
   • The tree bearing this fruit: "bitter orange" also names the evergreen tree that produces this sour fruit, often used in horticulture as rootstock for grafting sweeter citrus varieties.

Examples of Usage

• Noun (Fruit): The recipe calls for the zest of a bitter orange to give the marmalade its distinctive flavor. Unlike the sweet oranges we eat, a bitter orange is too sour to consume raw.

• Noun (Tree): The garden contained an old bitter orange tree, its branches heavy with fragrant blossoms. They grafted the lemon scion onto a hardy bitter orange rootstock.

Advanced Usage

• In botanical/culinary contexts: The term is precise, distinguishing it from the sweet orange (). It is central to discussions of specific recipes, essential oils, or horticultural practices.

Variants and Related Words

• Seville orange: A common name for the same fruit, often used in the context of British marmalade.
• Sour orange: A direct synonym for bitter orange.
• Bigarade: A French term for the bitter orange, often used in culinary contexts (e.g., ).
• Neroli: An essential oil distilled from the blossoms of the bitter orange tree.
• Bergamot orange: () A related but distinct citrus fruit, also known for its aromatic peel.

Synonyms

• Seville orange
• Sour orange
• Marmalade orange (in the context of its primary culinary use)

Related Phrases/Compounds

• Bitter orange peel: Refers specifically to the zest or dried peel of the fruit, a common ingredient.
• Bitter orange oil: An essential oil extracted from the peel, used in flavoring and aromatherapy.

Noun

1. highly acidic orange used especially in marmalade
2. any of various common orange trees yielding sour or bitter fruit; used as grafting stock