ˌ ̷ ̷ ̷ ̷ˈkā(ˌ)lēz noun plural
Usage: capitalized
Etymology: New Latin, from Volvoc-, Volvox + -ales
: an order of chiefly freshwater green algae (class Chlorophyceae) that are solitary or colonial usually with a strictly fixed number of cells in the colony — compare heterocapsales , volvocaceae