plankton: meaning, definition, pronunciation and examples
B2Formal, Technical, Scientific, Environmental
Quick answer
What does “plankton” mean?
The collective term for the small and microscopic organisms, both plants (phytoplankton) and animals (zooplankton), that drift or float in oceans, seas, and bodies of fresh water, unable to swim against the current.
Audio
Pronunciation
Definition
Meaning and Definition
The collective term for the small and microscopic organisms, both plants (phytoplankton) and animals (zooplankton), that drift or float in oceans, seas, and bodies of fresh water, unable to swim against the current.
By extension, can refer to a diverse, drifting, or passively moving mass of similar things or people, often seen as foundational or basic within a larger system. The term is also used in environmental science as a key indicator of ecosystem health.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. Pronunciation differs slightly (see IPA).
Connotations
Identical in both varieties. Associated with marine biology, climate change discussions, and the base of the aquatic food web.
Frequency
Equally used in scientific and educational contexts in both regions. Slightly higher frequency in American media due to broader coverage of oceanographic studies from institutions like Scripps and Woods Hole.
Grammar
How to Use “plankton” in a Sentence
[plankton] + [verb: drifts/floats/blooms][verb: filter/consume/study] + [plankton][adjective: microscopic/marine/abundant] + [plankton]Vocabulary
Collocations
Examples
Examples of “plankton” in a Sentence
adjective
British English
- The plankton samples were analysed.
- The plankton survey yielded new data.
American English
- The plankton samples were analyzed.
- Plankton diversity is a key metric.
Usage
Meaning in Context
Business
Rare. Might appear metaphorically in management or tech writing: 'Our startup is just plankton in the vast ocean of Big Tech.'
Academic
Common in biology, environmental science, and geography texts: 'The study quantified seasonal variations in plankton biomass.'
Everyday
Used in educational TV (e.g., documentaries), aquarium visits, or environmental news: 'Whale sharks eat massive amounts of plankton.'
Technical
Core term in marine biology, limnology, and climate science, with subcategories like 'holoplankton' and 'meroplankton': 'The CPR (Continuous Plankton Recorder) survey tracks long-term changes.'
Watch out
Common Mistakes When Using “plankton”
- Using as a countable noun: 'We saw many planktons' (prefer: 'We saw many types of plankton' or 'a lot of plankton').
- Mispronouncing /ˈplæŋktən/ as /ˈplænktɒn/ or /ˈplɑːŋktən/.
FAQ
Frequently Asked Questions
It is usually a mass (uncountable) noun, treated as singular. While 'a plankton' is incorrect, you can say 'a plankton organism' or 'a type of plankton'.
Phytoplankton are plant-like, photosynthetic plankton (e.g., diatoms). Zooplankton are animal-like plankton that consume other organisms (e.g., krill, copepod larvae). Together they form 'plankton'.
Plankton produces over half the world's oxygen, forms the base of most aquatic food webs, and is a crucial carbon sink, influencing global climate.
Most individual plankton are microscopic, but in large numbers (during a 'bloom'), they can discolour vast areas of water, making them visible from space. Some larger types, like jellyfish, are technically plankton (megaplankton) and are easily visible.
The collective term for the small and microscopic organisms, both plants (phytoplankton) and animals (zooplankton), that drift or float in oceans, seas, and bodies of fresh water, unable to swim against the current.
Plankton is usually formal, technical, scientific, environmental in register.
Plankton: in British English it is pronounced /ˈplæŋ(k)tən/, and in American English it is pronounced /ˈplæŋktən/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: PLANK + TON. A PLANK of wood floats on water, and a TON of it would be a huge floating mass. Plankton is a huge mass of tiny floating life.
Conceptual Metaphor
THE BASE/FOUNDATION: Plankton is metaphorically the 'foundation' or 'base' of the aquatic food chain. PASSIVE MASS: Used to describe a large group of people or things that move passively, without individual direction.
Practice
Quiz
What is the primary characteristic of plankton?