MLchartDataset catalogue

Dataset · MLC-0121 · [FULL TEXT]

Environment terminology

1Description

Environment terminology. 29,894 terms with definitions, abbreviations, synonyms, subjects and references. Every term is published as its own page, A to Z.

804 terms carry more than one definition, numbered in the record.

Subjects (29): Biological substances (4,655); Built environments (3,950); Chemical substances (2,357); Regulatory activities (1,879); Water (1,836); Land, waste and cleanup (1,374); Natural environments (1,355); Research (1,228); Environmental events (1,172); Chemicals, toxics and pesticides (1,140); Commercial processes (973); Health and safety (971); and 17 more.

2Schema

Table 1. Fields
FieldTypeDescriptionExample
idstringStable MLchart term identifierMLC-T-ENV-000007
termstringHeadword as published10-Day Lethal Concentration 50 Percent
fieldstringField of the datasetEnvironment
definitionstringDefinition text; several definitions are numberedApplied to the sediment toxicity BAT effluent limitations and NSPS...
abbreviationstringAbbreviation or acronym10-Day LC
expansionsarrayExpanded forms, when the headword is an acronymACCESSIONED RECORDS
synonymsarrayEquivalent terms10-day LC5
subjectstringSubject within the fieldRegulatory activities
see_alsoarrayRelated terms in the same fieldAcidic
referencesarrayPublications cited for the definition40 CFR 435.11 (CFR 2017)
urlstringCanonical page of the termhttps://mlchart.com/terminology/environment/10-day-lethal-concentratio...

3Sample records

Sample record

{
  "id": "MLC-T-ENV-000007",
  "term": "10-Day Lethal Concentration 50 Percent",
  "field": "Environment",
  "definition": "Applied to the sediment toxicity BAT effluent limitations and NSPS means the concentration (milligrams/kilogram dry sediment) of the base fluid in sediment that is lethal to 50 percent of the Leptocheirus plumulosus test organisms exposed to that concentration of the base fluids after ten days of constant exposure.",
  "abbreviation": "10-Day LC",
  "synonyms": [
    "10-day LC5"
  ],
  "subject": "Regulatory activities",
  "references": [
    "40 CFR 435.11 (CFR 2017)"
  ],
  "url": "https://mlchart.com/terminology/environment/10-day-lethal-concentration-50-percent/"
}

4Browse

Table 2. Terms by initial
InitialTermsFromTo
A2,431A' electrodeAzimuthal map projection
B1,290B 0BYTE
C3,254C 12-C 14 ester and C 8 esterCzochralski process
D1,500Daily averageDystrophic lake
E1,770E horizonEyespot
F1,343FabricFuzzy logic
G771G1 phase processGyroscopic steering tool
H975H-1 receptor blockerHysteresis
I1,253IAQ backgrounderIxodidae
J52Jam and jelly productionJuvenile wood
K86KahoolaweKyoto Protocol
L982La NiñaLytic phase
M1,782M electrodeMyxomatosis
N1,151N electrodeNymph
O831O horizonOzone transport region
P2,670P wavePyrrolizidine alkaloids poisoning
Q116QQuote
R1,610R valueRut
S2,873S phase processSystems-based research
T1,311T 0-50Tyrosine
U492U. S. land ownership typeUV-Cured Inks
V421V zoneVulva
W720WabashWritten commitment
X30X by factorXylene
Y29YakimaYucca Mountain Site
Z58Z scoresZygote
0-993">="96-Hour Lethal Concentration 50 Percent

Acronyms and abbreviations: 2,685 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), 29,894 records. Delivered as JSONL, CSV or Parquet under a commercial licence.

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