layer
/ˈleɪ.ər/(noun)
AWL Sublist 3CEFR B2IELTS Band 7.0 - 9.0
Academic Definition
A sheet, quantity, or thickness of material, typically one of several, covering a surface or forming a level.
Key Academic Collocations
Click to copyWord Family & Derivatives
layerlayeredlayeringlayers
Lexical Alternatives (Synonyms)
stratumtiercoatingsheetlamina
Academic Sample Sentences in Context
"The cross-section diagram depicts the successive layers of rock, sand, and gravel utilized in natural water filtration."
"International accords have succeeded in gradually replenishing the stratospheric ozone layer over polar zones."
"Bureaucratic administrative layers frequently obstruct the prompt delivery of emergency relief funds."
IELTS Examiner Scoring Strategy (Lexical Resource)
Commonly needed in Task 1 process/diagram questions (geology, filtration, soil profiles, thermal insulation).