ecosystem

American  

[ee-koh-sis-tuhm, ek-oh-] / ˈi koʊˌsɪs təm, ˈɛk oʊ- /

noun

• ecosystems
  plural

1. 

   Ecology. a system, or a group of interconnected elements, formed by the interaction of a community of organisms with their environment.

   Aquatic ecosystems differ radically from their terrestrial counterparts.

2. any system or network of interconnecting and interacting parts, as in a business.

   The success of Apple’s ecosystem depends on hardware/software integration.

   Manufacturers, retailers, and customers are all part of the automotive industry’s ecosystem.

---

ecosystem British  

/ ˈiːkəʊˌsɪstəm, ˈɛkəʊ- /

noun

1. ecology a system involving the interactions between a community of living organisms in a particular area and its nonliving environment

---

ecosystem Scientific  

/ ē′kō-sĭs′təm /

1. A community of organisms together with their physical environment, viewed as a system of interacting and interdependent relationships and including such processes as the flow of energy through trophic levels and the cycling of chemical elements and compounds through living and nonliving components of the system.

---

ecosystem Cultural  

1. A collection of living things and the environment in which they live. For example, a prairie ecosystem includes coyotes, the rabbits on which they feed, and the grasses that feed the rabbits.

---

Synonym Usage

ecosystem, habitat, environment, biosphere, ecology are all scientific terms that can refer to spaces or systems in which plants and animals (including humans) live in relationship with each other and with the surrounding physical conditions. environment is the most general term. It can refer to a set of surrounding conditions thought of as a whole, as in a desert environment, or it can single out one or more conditions that could exist with a variety of others: This plant thrives in a warm, moist environment. By itself, it usually refers to all the conditions, elements, and living things that humans live among: Armed conflict always harms the environment. A habitat, on the other hand, is a specific area or set of surrounding conditions that is the natural home of a particular animal, plant, or other organism: The polar bear’s habitat is the Arctic sea ice. The word ecosystem refers to all of the organisms and physical conditions within a certain space, interacting with each other to form a complex, balanced web of relationships. It can be of any size: The 3,000-acre marsh is a finely balanced wetland ecosystem. Each aquarium houses a complete ecosystem of rocks and sand, aquatic plants, fish, and other creatures. The largest known ecosystem of all is the biosphere, consisting of the whole earth and all its living inhabitants. ecology is different from all the other words here: like them, it can mean the web of relationships operating within a particular ecosystem, as in a grassland ecology, but more often refers broadly to relationships between organisms and their environments in general, or to the science that studies these relationships.

Discover More

Chemical substances move through ecosystems on the Earth in cycles (see carbon cycle).

The source of energy for almost every ecosystem on Earth is the sun.

Other Word Forms

Noun Inflected Forms

• ecosystems
  plural

---

Etymology

Origin of ecosystem

First recorded in 1930–35; eco- + system

---

Explanation

An ecosystem is all the living things, from plants and animals to microscopic organisms, that share an environment. Everything in an ecosystem has an important role. Well, almost everything. The term ecosystem was coined in 1935, though ecosystems have been around as long as living things. Eco is a spin-off from the word ecology and describes anything having to do with the environment and our relation to it. You've probably heard of related terms like eco-friendly and eco-warrior. And system comes from the Greek word systema or "organized body, whole."

Example Sentences

See Examples For:

ecosystem ecosystems

“This is a strategic no brainer for Musk and the SpaceX ecosystem to merge with Tesla,” analyst Dan Ives, a partner Yorkville Ives & Co., said in a statement.

From Los Angeles Times ● Oct. 22, 2026

Micron’s cash position is swelling, but some companies that buy AI chips are increasingly reliant on borrowed money, and that’s helping the AI ecosystem stay afloat.

From MarketWatch ● Oct. 21, 2026

Rothney said: "It's kind of a fitting tribute that we've welcomed what many, many people see as a pest...and we've helped them survive, which will help this whole ecosystem that we rely on."

From BBC ● Oct. 21, 2026

Researchers are interested in not only how Naidiri Village has protected their marine ecosystem, but also specific corals showing extraordinary heat resistance.

From Barron's ● Oct. 17, 2026

The whole animal, or ecosystem, stuck for the time being halfway along in evolution, appears to be a model for the development of cells like our own.

From "The Lives of a Cell" by Lewis Thomas

The overexploitation of parrotfish and other groupers threatens 63 percent of coral reef ecosystems.

From Barron's ● Oct. 22, 2026

A newly identified freshwater cave snail in China is offering scientists a rare glimpse into the little-known aquatic ecosystems hidden beneath East Asia.

From Science Daily ● Oct. 21, 2026

GCash is one of the Philippines’s largest digital cashless ecosystems, serving 94 million users through its mobile wallet and financial app.

From The Wall Street Journal ● Oct. 20, 2026

“So from the vantage point of ocean ecosystems, it’s unambiguously a positive thing.”

From Los Angeles Times ● Oct. 19, 2026

In their home ecosystems these species have, like all living things, a full complement of parasites, microbes, viruses, and insect predators to shorten and immiserate their lives.

From "1491" by Charles C. Mann

Random Word

Spin the wheel and learn a new word!

---