Having become spiny or prickly; possessing spines or spike-like projections.
From Greek 'echinos' (ἐχῖνος) meaning 'hedgehog,' with the past participle suffix '-ated.' This form emphasizes that something has acquired or developed spiny characteristics.
Echinated surfaces often serve protective functions in nature—from sea urchin shells to pollen grains—making spines one of evolution's most practical defenses against predators and environmental stress!
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