Longman Dictionary of Contemporary English homepage

Topic: GEOLOGY

Date: 1300-1400
Language: Old French
Origin: esclat 'thin piece split off', from esclater 'to burst, splinter'

slate

1 noun
     
slate1
1

rock

[uncountable]HEG a dark grey rock that can easily be split into flat thin pieces
2

on a roof

[countable] especially British EnglishTBC a small piece of slate or similar material that is used for covering roofs [= tile]:
There were several slates missing from the roof.
3

slate blue/grey

CC a dark blue or grey colour
4

politics

[countable]PPV a list of people that voters can choose in an election, or who are being considered for an important job
5

for writing on

[countable]SE a small black board or a flat piece of slate in a wooden frame used for writing on in the past
6

put something on the slate

British English old-fashioned to arrange to pay for something later, especially food or drink

➔ a clean slate

at clean1 (9)
Definition of slate from the Longman Dictionary of Contemporary English within
the topic GEOLOGY

Explore GEOLOGY Topic

basin bed canyon cape clay cliff coal coastal core cove creek crystal delta deposit earthquake elevation era fault fold fossil geology(n) geology(n) granite gulf inactive jasper jet lake lava lime marble marsh matrix mica mineral mining mountain oasis ore peninsula petroleum pinnacle plate prairie quartz reservoir ridge river rock sand sapphire settlement shelf slate stone summit terrain thermal tor valley vein

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