ˈhed.ə(ˌ)rōˌkäˈkā(ˌ)lēz noun plural
Usage: capitalized
Etymology: New Latin, from Heterococcus, genus of algae (from heter- + -coccus ) + -ales
: an order of yellow-green algae including all members of the class Xanthophyceae having the immobile vegetative cells surrounded by a cell wall and incapable of returning to the motile state directly