Having horns or being furnished with horn-like structures.
Past participle form of cornuate, formed by adding -d to the adjective cornuate. This variant emerged in English to describe things that have become or been made horn-like.
Some plants are described as cornuated because they've developed horn-like thorns or spines as a defense mechanism—nature keeps reinventing the horn shape because it's so effective at protecting vulnerable tissues.
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