BharatNotes Subsidence
noun (uncountable, also countable)Usage in a UPSC answer
The Geological Survey of India's hazard zonation maps flag Jharia coalfield as critically subsidence-prone, where decades of underground mining have caused houses to tilt and roads to crack, forcing phased relocation of over 500,000 residents under the Jharia Rehabilitation and Development Authority.
Synonyms
Antonyms
Word Family
subside (verb), subsiding (adjective/participle), subsident (adjective), subsidential (adjective), subsidence-prone (compound adjective)
Root
Latin subsidere = to sink down (sub- = under + sidere = to settle, sit); suffix -ence marks state or process
Etymology
From Latin subsidentia, a verbal noun of subsidere (to settle, sink). The verb subsidere combines sub- (under, beneath) with sidere (to sit, settle), related to sedere (to sit) and sedimentum (settlement). The word entered English via medieval Latin and Old French in the 17th century; its geological application to ground-level sinking was formalised during the industrial-revolution era of deep mining in Britain.
Memory Hook
SUB = under, SIDE = sit/settle: the ground 'sits down under' itself. Picture the ground slowly sitting into a chair that keeps lowering — that is subsidence. The Latin root sedere (to sit) is the same root as 'sediment', which also settles downward.
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