English word ecological comes from English -ical, English ecology
| Dictionary entry | Language | Definition |
|---|---|---|
| -ical | English (eng) | Used to form adjectives from nouns with the meaning "of or pertaining to"; adjectival suffix appended to various words, often nouns, to make an adjective form. Often added to words of Latin origin, but used with other words also. |
| ecology | English (eng) | (biology) The branch of biology dealing with the relationships of organisms with their environment and with each other. |
| ecological | English (eng) | Not harmful to the environment.. Relating to ecology, the interrelationships of organisms and their environment. |