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Regulate — Definition, Word History, and First Known Use
- AUTHOR / EDITOR
- Merriam-Webster Editors
- YEAR
- 2026
- PUBLISHER
- Merriam-Webster
- DOI
- Not recorded
- SOURCE TYPE
- historical dictionary
- EXTERNAL RECORD
- OPEN ORIGINAL ↗
CONTRARIAN TRUTH CLAIMS
RANKED REVEALS THAT CITE THIS SOURCE
To regulate is to bring under a straightedge’s rule.
The verb passes through regulātus and regulāre to Latin rēgula. Governance and technical adjustment share the older idea of directing by rule.
*h₃reg̑- → *h₃reg- → *rēg-olā- → rēgula → regulāre → regulātus → regulate → regulate
Etymology: regulatus from regulare from regulaPublishes the complete morphological chain.
SCHOLARLY DISAGREEMENT
DISPUTE POSITIONS THAT CITE THIS SOURCE
Did regulate begin only as a legal-government word?
No. The reported meanings include govern, direct, order, and adjust; legal control is one major branch.
Definitions 1–3Documents govern, order, control, and rate-adjustment senses.
Does regulate jump directly from the root meaning rule?
No. The reviewed route passes through Latin rēgula, Late Latin regulāre, and its participle regulātus.
Etymology: regulatus from regulare from regulaPublishes every intermediate formation.
CANONICAL RELATIONSHIP CLAIMS
EDGES THAT CITE THIS SOURCE
regulate → regulate
Present-Day English → Middle English · continuation
- SOUND
- Modern regulate continues the reported Middle English verb.
- MEANING
- Govern or direct according to rule expands to ordering, controlling, and technical adjustment.
- SCHOLAR / EDITOR
- Merriam-Webster Editors
Word History and First Known UseSupplies the Middle English stage, meaning, and fifteenth-century horizon.
regulate → regulātus
Middle English → Late Latin · borrowing
- SOUND
- The Middle English verb reflects Late Latin regulātus.
- MEANING
- A regulated or directed participle supplies the English verb formation.
- SCHOLAR / EDITOR
- Merriam-Webster Editors
Etymology: Middle English from Late Latin regulatusPublishes the borrowing source.
regulātus → regulāre
Late Latin → Late Latin · inflection
- SOUND
- Late Latin regulātus is the past participle of regulāre.
- MEANING
- The participle preserves the verb’s directing and regulating sense.
- SCHOLAR / EDITOR
- Merriam-Webster Editors
Etymology: regulatus, past participle of regularePublishes the inflectional relationship.
regulāre → rēgula
Late Latin → Latin · derivation
- SOUND
- Late Latin regulāre is formed from Latin rēgula.
- MEANING
- To regulate or direct means act according to a rule.
- SCHOLAR / EDITOR
- Merriam-Webster Editors
Etymology: regulare from Latin regulaPublishes the derivation from rule.
LEXICAL ATTESTATIONS
WITNESSES REPORTED BY THIS SOURCE
regulate
Merriam-Webster first-known-use report for regulate
OPEN WITNESS 167 ↗COMPARATIVE EVIDENCE
COGNATES, DESCENDANTS, AND RELATIVES
GEOGRAPHIC AND TEMPORAL CLAIMS
JOURNEY STAGES THAT CITE THIS SOURCE
Late Roman linguistic world
Supplies the Late Latin morphology.
Etymology: regulatus from regulare from regula · broadEngland
Supplies the English route.
Etymology: Middle English from Late Latin · regionalGlobal English
Supplies the semantic range and century horizon.
Definitions and First Known Use · globalNON-GENEALOGICAL CONNECTIONS
HISTORICAL CONTEXT, KEPT SEPARATE
WORD-FAMILY REUSE
DOSSIERS THAT DEPEND ON THIS SOURCE
4 entry-scoped citations map reviewed dossier paths onto the canonical claims above.