ˌdezməˈkän(ˌ)tē noun plural
Usage: capitalized
Etymology: New Latin, from desm- + -kontae (from Greek kontos pole)
: a class of chiefly solitary and motile algae (division Pyrrophyta) that have the cell wall divided vertically into two valves which are not in turn divided into plates like those of members of the class Dinophyceae