different between crust vs tectonics

English

Etymology

From Middle English cruste, from Anglo-Norman and Old French cruste, from Latin crusta (“hard outer covering”), from Proto-Indo-European *krustós (“hardened”), from *krews- (“to form a crust, begin to freeze”), related to Old Norse hroðr (“scurf”), Old English hruse (“earth”), Old High German hrosa (“crust, ice”), Latvian kruvesis (“frozen mud”), Ancient Greek ????? (krúos, “frost, icy cold”), ?????????? (krústallos, “crystal, ice”), Avestan ????????????????????????????-? (xruzdra-, “hard”), Sanskrit ?????? (kr??, “thicken, make hard”)

Pronunciation

• IPA^(key): /k??st/
• Rhymes: -?st

Noun

crust (countable and uncountable, plural crusts)

1. A more solid, dense or hard layer on a surface or boundary.
2. The external, hardened layer of certain foodstuffs, including most types of bread, fried meat, etc.
3. An outer layer composed of pastry

   • Th' impenetrable crust thy teeth defies.
4. The bread-like base of a pizza.
5. (geology) The outermost layer of the lithosphere of the Earth.
6. The shell of crabs, lobsters, etc.
7. (uncountable, informal) Nerve, gall.
8. (music) Ellipsis of crust punk (a subgenre of punk music)
9. (Britain, informal) A living.

   Synonyms: daily bread, income, livelihood

   • 1999, Norman Longworth, Making Lifelong Learning Work: Learning Cities for a Learning Century, Psychology Press (?ISBN), page 1:

     Like most of us, I am frequently asked by friends and people I meet in business situations or round the dinner table what I do to earn my crust.

Derived terms

• upper crust

Related terms

• crusted
• crusty
• encrust

Translations

Verb

crust (third-person singular simple present crusts, present participle crusting, simple past and past participle crusted)

1. (transitive) To cover with a crust.
   • 1662, Robert Boyle, An Account of Freezing

     The whole body is crusted over with ice.

   • 1711, Henry Felton, Dissertation on Reading the Classics

     Their minds are crusted over, like diamonds in the rock.

2. (intransitive) To form a crust.

Translations

Anagrams

• cruts, curst, curts

English

Etymology

Ancient Greek ?????? (tékt?n, “builder”).

Pronunciation

• enPR: t?k-t?n'?ks
• Rhymes: -?n?ks

Noun

tectonics (uncountable)

1. (geology) The study of crustal plates and other large-scale structural features of the Earth.
2. (architecture) The science and art of assembling, shaping, or ornamenting materials in construction.

Derived terms

Related terms

Translations