noun🔗SharePlanctonSmall (often microscopic) organisms that float in the water. (A single organism is known as a plankter.)"Fish eat plankton, tiny organisms that float in the ocean. "Los peces comen plancton, organismos diminutos que flotan en el océano.organismbiologyoceanenvironmentmicroorganismanimalnatureecologyChat with AIVocabulary GamePractice Reading