d layer

d lay·er

D d

Transcription

- US Pronunciation
- US IPA
- [dee ley-er]
- /di ˈleɪ ər/

- US Pronunciation
- US IPA
- [dee ley-er]
- /di ˈleɪ ər/

Definitions of d layer words

noun d layer the lowest area of the ionosphere, having increased ion density and existing only in the daytime: it begins at an altitude of about 70 km (c. 43 mi) and merges with the E layer 3
noun d layer the lowest region of the ionosphere, characterized by mounting electron and ion density: exists, during the day only, from about 43 to 50 miles (70 to 80 km) altitude. 1

See all 2 definitions of d layer

Information block about the term

Origin of d layer

First appearance:

before 1930

One of the 10% newest English words

First recorded in 1930-35

Historical Comparancy

Parts of speech for D layer

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

Full grammatical hierarchy of D layer

d layer popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 51% of English native speakers know the meaning and use word.

This word is included in each student's vocabulary. Most likely there is at least one movie with this word in the title.

d layer usage trend in Literature

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