zone leveller, n.

zone-leveller
http://www.oed.com/dictionary/zone-leveller_n%3Ftab%3Dmeaning_and_use
First published 1986; not fully revised

# zone levellernoun

## Factsheet

### What does the noun zone leveller mean?

There is one meaning in OED's entry for the noun zone leveller. See ‘Meaning & use’ for definition, usage, and quotation evidence.

#### Entry status

OED is undergoing a continuous programme of revision to modernize and improve definitions. This entry has not yet been fully revised.

### Where does the noun zone leveller come from?

Earliest known use

1950s

The earliest known use of the noun zone leveller is in the 1950s.

OED's only evidence for zone leveller is from 1956, in Bell System Technical Journal.

### Nearby entries

1. zone, n. a1500–
2. zone, v. 1792–
3. zone centre | zone center, n. 1934–
4. zoned, adj. 1662–
5. zone defence | zone defense, n. 1927–
6. zone electrophoresis, n. 1952–
7. zone fossil, n. 1904–
8. zoneless, adj. 1748–
9. zonelet, n. 1855–
10. zone level, v. 1974–
11. zone leveller, n.1956–
12. zone levelling, n. 1953–
13. zone-melt, v. 1982–
14. zone melting, n. 1952–
15. zone plate, n. 1890–
16. zoner, n. 1962–
17. zone-refine, v. 1962–
18. zone refiner, n. 1959–
19. zone refining, n. 1952–
20. zone therapy, n. 1915–
21. zone time, n. 1908–

## Meaning & use

1. 1956–
   An apparatus used for zone levelling.
   1. 1956

      > A zone leveler has been developed to provide growth conditions suitable for the production of quality germanium single crystals.

      Bell System Technical Journal vol. 35 660
   metal industry
   1. zone leveller 1956–
      An apparatus used for zone levelling.
   2. zone refiner 1959–
      An apparatus used for zone refining.
   View in Historical Thesaurus

Originally published as part of the entry for zone, n.

zone, n. was first published in 1921; not fully revised.