ecology

American  

[ih-kol-uh-jee, ee-kol-] / ɪˈkɒl ə dʒi, iˈkɒl- /

Archaic, oecology

noun

ecologies plural

1. the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms.

2. the set of relationships existing between organisms and their environment.

   Inflowing rivers introduce nutrients and sediments that are important for the ecology of the lake.

3. the set of relationships existing between any complex system and its surroundings or environment.

   In the ecology of healthcare, both politics and technology play a key role.

4. Also called human ecology.  the branch of sociology concerned with the spacing and interdependence of people and institutions.

5. advocacy for the protection of natural resources from pollution or its effects; environmentalism.

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ecology British  

/ ɪˈkɒlədʒɪ /

noun

1. the study of the relationships between living organisms and their environment

2. the set of relationships of a particular organism with its environment

3. the study of the relationships between human groups and their physical environment

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ecology Scientific  

/ ĭ-kŏl′ə-jē /

1. The scientific study of the relationships between living things and their environments.

2. Also called bionomics

3. A system of such relationships within a particular environment.

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ecology Cultural  

1. The study of living things, their environment, and the relation between the two.

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Synonym Usage

See ecosystem ( def. ).

Other Word Forms

Derived Forms

• ecologist
  noun
• ecologic
  adjective
• ecological
  adjective
• unecological
  adjective
• ecologically
  adverb
• unecologically
  adverb

Inflected Forms

Nouns

• ecologies
  plural

Etymology

Origin of ecology

First recorded in 1870–75; earlier oecology, from German Ökologie, from Greek oîk(os) “house, dwelling” + -o- + German -logie -logy; term introduced by E. H. Haeckel (1834–1919)

Explanation

The noun ecology describes the environment as it connects to living things, or the branch of biology that studies that environment. The German zoologist Ernst Haeckel coined the word ecology almost 150 years ago, and it should come as no surprise — his being a serious scientist and all — that he combined a couple of Greek words to do it. Oikos means "habitation" and -ology means "the study of." So ecology started off as the study of where things live. More and more, though, the word is used interchangeably with environment.

Example Sentences

See Examples For:

ecology ecologies

The ecology tour being held in a public park with even footpaths meant she could fully participate.

From BBC ● Jun. 20, 2026

"Predicting which species will be vulnerable to climate change is one of the biggest challenges in ecology," says Dr. Kellermann.

From Science Daily ● Jun. 18, 2026

But as Michael Byrne, wildlife ecology professor at the University of Missouri, put it: “Vultures are big birds and have big poops.”

From The Wall Street Journal ● Jun. 16, 2026

As the ecology director at the nonprofit Climate Revolution Action Network, the 20-year-old has helped put a stop to multiple data centers across New Jersey and pushed for ordinances to ban their construction altogether.

From Salon ● Jun. 12, 2026

Back in high school, she was extremely vocal in pointing out hypocrisies in the curriculum, or inequalities in their disciplinary system—and nothing has really changed now that she’s a social ecology major at UC Irvine.

From "Dry" by Neal Shusterman and Jarrod Shusterman

While Mr Bhatia doesn’t think that urbanisation is evil, he points out that it can lead to the rather unscientific abandonment of traditions that were designed to serve systems and ecologies.

From BBC ● Oct. 16, 2024

Clear-cutting, for example, is devastating to local ecologies.

From Los Angeles Times ● Aug. 21, 2023

"But plastic bottles…become curses in our bodies and interconnected ecologies."

From Salon ● Jun. 12, 2023

The wide-scale outbreaks have provided researchers with a new opportunity to fine-tune their understanding of the disease by studying which wild bird species, behaviors and ecologies play key roles in transmission.

From New York Times ● Jun. 17, 2022

Warming, Adams, Wheeler, and others have described, in their plant and animal ecologies, the processes of competition and segregation by which communities are formed.

From Introduction to the Science of Sociology by Park, Robert Ezra

Related Words

• conservation
• preservation