Simple Definition of plankton
: the very small animal and plant life in an ocean, lake, etc.
Examples of plankton in a sentence
fish that feed mainly on plankton
Origin and Etymology of plankton
German, from Greek, neuter of planktos drifting, from plazesthai to wander, drift, middle voice of plazein to drive astray; akin to Latin plangere to strike — more at plaint
First Known Use: 1889
PLANKTON Defined for Kids
Definition of plankton for Students
: the tiny floating plants and animals of a body of water
Seen and Heard
What made you want to look up plankton? Please tell us where you read or heard it (including the quote, if possible).