Describing organisms or structures that bear or carry arches, particularly used in describing certain frog species with arch-shaped pelvic bones.
From Latin 'arcus' (arch) + 'ferre' (to carry) + '-ous' (adjective suffix); this scientific descriptor evolved from the need to categorize frogs based on skeletal differences.
This word is basically 'arch-carrying' in fancy Latin—it's how biologists describe those primitive frogs whose bodies literally still show evidence of evolutionary changes in bone structure.
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