Lo*ri"ca (?), n.; pl. Loricæ (#). [L., lit., a corselet of thongs, fr. lorum thong.] 1. (Anc. Armor) A cuirass, originally of leather, afterward of plates of metal or horn sewed on linen or the like.

2. (Chem.) Lute for protecting vessels from the fire.

3. (Zoöl.) The protective case or shell of an infusorian or rotifer.