“Tumor” or “Tumour”

Language

Tumor and tumour are both English terms.

Usage

Tumor is predominantly used in 🇺🇸 American (US) English (en-US) while tumour is predominantly used in 🇬🇧 British English (used in UK/AU/NZ) (en-GB).

In terms of actual appearance and usage, here's a breakdown by country, with usage level out of 100 (if available) 👇:

Term	US	UK	India	Philippines	Canada	Australia	Liberia	Ireland	New Zealand	Jamaica	Trinidad & Tobago	Guyana
tumor	99	53	86	99	81	57	100	57	59	87	85	100
tumour	1	47	14	1	19	43	0	43	41	13	15	0

• In the United States, there is a preference for "tumor" over "tumour" (99 to 1).
• In the United Kingdom, there is a preference for "tumor" over "tumour" (53 to 47).
• In India, there is a preference for "tumor" over "tumour" (86 to 14).
• In the Philippines, there is a preference for "tumor" over "tumour" (99 to 1).
• In Canada, there is a preference for "tumor" over "tumour" (81 to 19).
• In Australia, there is a preference for "tumor" over "tumour" (57 to 43).
• In Liberia, there is a preference for "tumor" over "tumour" (100 to 0).
• In Ireland, there is a preference for "tumor" over "tumour" (57 to 43).
• In New Zealand, there is a preference for "tumor" over "tumour" (59 to 41).
• In Jamaica, there is a preference for "tumor" over "tumour" (87 to 13).
• In Trinidad & Tobago, there is a preference for "tumor" over "tumour" (85 to 15).
• In Guyana, there is a preference for "tumor" over "tumour" (100 to 0).

Examples

Below, we provide some examples of when to use tumor or tumour with sample sentences.

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