Sepaloid refers to a structure that resembles a sepal, which is the outermost part of a flower's calyx. Some synonyms for sepaloid include petaloid, calyx-like, sepaline, and calyciform. Petaloid is most often used to describe a petal-like sepal, while calyx-like and sepaline refer to structures that resemble a sepal in form or function. Calyciform describes a structure with a cup-like shape, similar to a calyx or sepal. Other related terms include perianth, which encompasses both the calyx and corolla (petals), and tepal, which refers to a structure that is both a sepal and a petal.