Transcription
-
- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
-
- [prop-er moh-shuh n]
- /ˈprɒp ər ˈmoʊ ʃən/
- /ˈprɒpə(r) ˈməʊʃn/
-
- US Pronunciation
- US IPA
-
- [prop-er moh-shuh n]
- /ˈprɒp ər ˈmoʊ ʃən/
Definitions of proper motion words
- noun proper motion Astronomy. the angular motion of a star relative to a suitably defined frame of reference, expressed in seconds of arc per year. 1
- noun proper motion the very small continuous change in the direction of motion of a star relative to the sun. It is determined from its radial and tangential motion 0
Information block about the term
Origin of proper motion
First appearance:
before 1595 One of the 38% oldest English words
First recorded in 1595-1605
Historical Comparancy
Parts of speech for Proper motion
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
proper motion popularity
This term is known only to a narrow circle of people with rare knowledge. Only 27% of English native speakers know the meaning of this word.
According to our data about 72% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.
proper motion usage trend in Literature
This diagram is provided by Google Ngram ViewerSee also
Matching words
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