It is a lexical component that is used as "horn-shaped or hard", although it also extends to organic tissue that grows outside the skin or as a hard covering. It comes from the Greek 954; 949; 961; 945; 964; 959; 962; (keratos "") which is the genitive of 954; 949; 961; 945; 962; (keras) with such broad meanings as "horn, insect antenna, bend of a river, naval or infantry column, peak of a mountain, bugle, object made with a pole, . . . " .
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