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. "Les poissons mangent du plancton, de minuscules organismes qui flottent dans l'océan.organismbiologyoceanenvironmentmicroorganismanimalnatureecologyChat with AIVocabulary GamePractice Reading