palˈmelə noun
Usage: capitalized
Etymology: New Latin, from Greek palmos vibration, quivering (from pallein to shake) + New Latin -ella — more at polemic
: a genus (the type of the family Palmellaceae) comprising terrestrial and freshwater green algae that form large masses of usually immobile cells embedded in a gelatinous matrix and sometimes including forms generally held to be palmella stages of flagellated algae or plantlike flagellates