👉 The term "Costachorema" is a biological term that refers to an organism's ability to form and maintain a specific type of crust, known as the Costachoreum, which is found in certain species of bacteria. The costachoreum is typically composed of a layer of cells, with each cell containing a small, flat area called a "costachore" or "coat," which provides protection against external pathogens and helps regulate the organism's internal environment.