Definition: The term "trocilus" is used in botany to describe a type of flowering plant that has many flowers arranged in a spiral pattern. These flowers are called trochilids and they are found on a variety of plants, including roses, lilies, and certain species of orchids. Trocilus typically have single flower heads with 12-30 petals, each petal being surrounded by a series of smaller petals that form a spiral pattern. This type of