overburden en · NOUN
Pronunciation
- /ˈoʊvɚˌbɝdn̩/ (Canada, General-American)
- /ˈəʊ̯vəˌbɜːdn̩/ (Received-Pronunciation)
- /ˈəʉ̯vəˌbɜːdn̩/ (Australia)
- [ˈɐʉ̯.vɐˌbɜːdn̩] (Australia)
Etymology
Etymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upér Proto-Germanic *uber Old English ofer- Middle English over- English over- English burden English overburden From over- + burden.
Meanings
-
(countable, uncountable) The rock and subsoil that lies above a mineral deposit such as a coal seam, or any other underground feature.
Such rocks have been changed by baking in a terrestrial pressure-cooker. Then they have been disinterred: kilometres of overburden must have been removed.
2004, Richard Fortey, The Earth, Folio Society, published 2011, page 163:Settari (2002) and Osorio et al. (1999) also suggest that the analysis domain should include overburdens, sideburdens and underburdens for better accommodation of the coupling effects of stress changes and flow.
2007, Erik Eberhardt, Doug Stead, Tom Morrison, Rock Mechanics: Meeting Society's Challenges and Demands, →ISBN:Before much progress was made with the inverts, however, the movement became accelerated, and it was decided to lighten the load over the tunnel by removing some of the soil, […]. This reduction in the overburden arrested the movement, and the inverting and centring were completed, and the tunnel opened again to traffic on April 9, 1949.
1953 January, “Notes and News: Arley Tunnel, L.M.R.”, in Railway Magazine, page 61:
- (countable, uncountable) A sterile stratum that lies above the stratum being investigated.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| overburthen | alternative | lexicographic | |
| overburdens | Number=Plur | lexicographic |