Delimitation

noun (uncountable and countable)

/dɪˌlɪmɪˈteɪʃən/

The act of fixing or re-drawing the territorial boundaries of electoral constituencies to reflect population changes as recorded in a Census. In India, delimitation is carried out by the Delimitation Commission constituted under the Delimitation Commission Act; the orders of such a Commission have the force of law and cannot be challenged in any court (Article 329(a)). The last delimitation of Lok Sabha constituencies based on the 2001 Census took effect in 2008; delimitation based on the 2011 Census has been frozen until after the first Census post-2026.

✍️ Usage in a UPSC answer

The prospect of delimitation after the 2031 Census has heightened concerns among southern states, which fear a reduction in their Lok Sabha seat share relative to their northern counterparts, given differential population growth rates.

Synonyms

demarcationboundary-fixingconstituency re-drawingapportionment

Antonyms

boundary freezinggerrymandering (perverse redistricting)

🌱 Word Family

delimit (verb), delimiter (noun), delimitative (adjective), limit (noun/verb), limitation (noun)

🔡 Root

Latin de- (down, marking off) + limes, limitis (boundary, limit) + -ation (noun suffix)

📜 Etymology

From Latin delimitare (to mark off boundaries), combining de- (marking out) and limes (a boundary, originally a Roman frontier road). The word entered English in the 19th century for the process of cartographic and political boundary-fixing.

🧠 Memory Hook

DELIMITATION = DE-LIMIT: marking the LIMITS (boundaries) of constituencies. Think of a surveyor driving stakes into the ground to LIMIT where one constituency ends and another begins.

📝 Seen in UPSC Question Papers

Prelims 2024 — Elections
Prelims 2024 — Constitutional Bodies

Real UPSC previous-year questions whose text uses “Delimitation” — proof this word earns its place on your list.

⚖️ Polity & Constitution 📖 Seen in: Preamble of the Indian Constitution

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