British spelling of bicolorous; having two colors, characterized by two distinct colors.
From 'bicolour' (British spelling) plus the suffix '-ous.' This is the British English variant of 'bicolorous,' maintaining consistency with British spelling conventions.
British naturalists and biologists prefer 'bicolourous' in formal descriptions, particularly when describing butterfly wings or fish scales—the term gives a sense of precision and scientific authority to their observations.
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