Dataset · MLC-0121 · [FULL TEXT]
Environment terminology
1Description
Environment terminology. 30,736 terms with definitions, abbreviations, synonyms, subjects and references. Every term is published as its own page, A to Z.
123 terms carry more than one definition, numbered in the record.
Subjects (15): Policy and guidance (1,496); General environmental (1,450); Land, waste and cleanup (1,326); Chemicals, toxics and pesticides (1,302); Air (1,168); Water (1,103); Health and safety (890); Ecosystems (808); Information management and systems (805); Laws, regulations and executive orders (615); Science and research (534); Climate change (514); and 3 more.
2Schema
| Field | Type | Description | Example |
|---|---|---|---|
| id | string | Stable MLchart term identifier | MLC-T-ENV-000375 |
| term | string | Headword as published | Active Ingredient |
| field | string | Field of the dataset | Environment |
| definition | string | Definition text; several definitions are numbered | 1. The chemical or substance component of a pesticide product that... |
| abbreviation | string | Abbreviation or acronym | A.I. |
| expansions | array | Expanded forms, when the headword is an acronym | ACCESSIONED RECORDS |
| synonyms | array | Equivalent terms | AI |
| subject | string | Subject within the field | Chemicals, toxics and pesticides |
| see_also | array | Related terms in the same field | Acidic |
| references | array | Publications cited for the definition | Pesticides Glossary, Toxicity Testing and Risk Assessment Glossary... |
| url | string | Canonical page of the term | https://mlchart.com/terminology/environment/active-ingredient/ |
3Sample records
Sample record
{
"id": "MLC-T-ENV-000375",
"term": "Active Ingredient",
"field": "Environment",
"definition": "1. The chemical or substance component of a pesticide product that can kill, repel, attract, mitigate or control a pest or that acts as a plant growth regulator, desiccant, or nitrogen stabilizer. The remainder of a formulated pesticide product consists of one or more \"inert ingredients\" (such as water, solvents, emulsifiers, surfactants, clay and propellants), which are there for reasons other than pesticidal activity.\n\n2. Chemical or substance component of a pesticide product that can kill, repel, attract, mitigate or control a pest or that acts as a plant growth regulator, desiccant, or nitrogen stabilizer. The remainder of a formulated pesticide product consists of one or more \"inert ingredients\" (such as water, solvents, emulsifiers, surfactants, clay and propellants), which are there for reasons other than pesticidal activity. By law, the active ingredient must be identified by name on the label together with its percentage by weight.\n\n3. The active ingredient in a pesticide product is the component which kills/controls the target pest. The active ingredient or AI includes any substance, or group of substances as specified by the Agency, that prevents, mitigates, destroys, or repels any pest; or that acts as a plant growth regulator, desiccant, defoliant, or nitrogen stabilizer. Pesticides are generally regulated on the basis of the AI.\n\n4. In any pesticide product, the component that kills, or otherwise controls, target pests. Pesticides are regulated primarily on the basis of active ingredients.\n\n5. Any substance (or group of structurally similar substances if specified by the Agency) that will prevent, destroy, repel or mitigate any pest, or that functions as a plant regulator, desiccant, or defoliant within the meaning of FIFRA sec. 2(a), except as provided in § 174.3 of this chapter.\n\n6. Any material that is intended to furnish pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease, or to affect the structure or any function of the body of man or other animals. This term does not include food, food additives (except vitamins and other materials described by SIC code 2833 or 2834), color additives, cosmetics, in-vitro diagnostic substances, x-ray film, test indicator devices, and medical devices such as implants, artificial joints, surgical bandages, and stitching material.\n\n7. Any substance (or group of structurally similar substances, if specified by the Agency) that will prevent, destroy, repel or mitigate any pest, or that functions as a plant regulator, desiccant, defoliant, or nitrogen stabilizer, within the meaning of FIFRA sec. 2(b).\n\n8. Pesticidal substance that is intended to be produced and used in a living plant, or in the produce thereof, and the genetic material necessary for the production of such a pesticidal substance.\n\n9. Ingredient of a pesticide which is intended to prevent, destroy, repel, or mitigate any pest.",
"abbreviation": "A.I.",
"synonyms": [
"AI"
],
"subject": "Chemicals, toxics and pesticides",
"references": [
"Pesticides Glossary",
"Toxicity Testing and Risk Assessment Glossary",
"PRIA Fee Determination Glossary",
"Terms of Environment; Federal Remediation Technologies Roundtable Glossary",
"40 CFR 152.3 (CFR 2013)",
"40 CFR 63.125 (CFR 2013)",
"40 CFR 158.300 (CFR 2013)",
"40 CFR 174.3 (CFR 2013)",
"40 CFR 455.10 (CFR 2013)"
],
"url": "https://mlchart.com/terminology/environment/active-ingredient/"
}
4Browse
| Initial | Terms | From | To |
|---|---|---|---|
| A | 2,484 | A' electrode | Azimuthal map projection |
| B | 1,313 | B 0 | BYTE |
| C | 3,357 | C 12-C 14 Ester and C 8 Ester | Czochralski Process |
| D | 1,538 | Daily Average | Dystrophic Lakes |
| E | 1,815 | E Horizon | Eyespot |
| F | 1,376 | Fabric | Fuzzy Logic |
| G | 787 | G1 Phase Process | gyroscopic steering tool |
| H | 1,010 | H-1 Receptor Blocker | hysteresis |
| I | 1,291 | IAQ Backgrounder | Ixodidae |
| J | 53 | Jam and Jelly Production | Juvenile Wood |
| K | 86 | Kahoolawe | Kyoto Protocol |
| L | 1,023 | La Niña | Lytic Phase |
| M | 1,833 | M electrode | Myxomatosis |
| N | 1,191 | N electrode | Nymph |
| O | 859 | O Horizon | Ozone Transport Region |
| P | 2,732 | P Wave | Pyrrolizidine Alkaloids Poisoning |
| Q | 123 | Q | Quote |
| R | 1,657 | R Value | Rut |
| S | 2,959 | S Phase Process | Systems-Based Research |
| T | 1,357 | T 0-50 | Tyrosine |
| U | 505 | U. S. Land Ownership Type | UV-Cured Inks |
| V | 436 | V Zone | Vulva |
| W | 738 | Wabash | Written Commitment |
| X | 31 | X by Factor | Xylenes |
| Y | 30 | Yakima | Yucca Mountain Site |
| Z | 59 | Z Scores | Zygote |
| 0-9 | 93 | ">=" | 96-Hour Lethal Concentration 50 Percent |
Acronyms and abbreviations: 2,686 entries with expansions.
5Uses
- Domain adaptation and fine-tuning of language models
- Term extraction, entity recognition and entity linking
- Glossary, thesaurus and ontology construction
- Search query expansion and synonym mapping
- Evaluation sets for definition and question answering tasks
6Citation
@misc{mlchart_terminology_environment_2026,
title = {Environment terminology},
author = {MLchart},
publisher = {MLchart},
year = {2026},
version = {2026.10},
url = {https://mlchart.com/terminology/environment/}
}
MLchart. (2026). Environment terminology (Version 2026.10) [Data set]. https://mlchart.com/terminology/environment/
7Access
The full Environment terminology dataset (MLC-0121), 30,736 records. Delivered as JSONL, CSV or Parquet under a commercial licence.