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Astronomer Noun Celestial Phenomena  One As·Tron·O·Mer Skilled Astronomy

Title Astronomer
Text
Merriam-Webster's Collegiate Dictionary
as·tron·o·mer
 \\ə-ˈsträ-nə-mər\\ noun
 DATE  14th century
: a person who is skilled in astronomy or who makes observations of celestial phenomena
English Etymology
astronomer
  mid-14c., from astronomy (q.v.), replacing Fr. import astronomyen (c.1300), which, had it survived, probably would have yielded *astronomian. Still in Shakespeare used in places where we would write astrologer.
Oxford Advanced Learner's Dictionary-牛津双解-OALD7
astronomer
as·tron·omer E5strCnEmE(r)NAmE E5strB:n- / noun   a scientist who studies 
astronomy
 
   天文学家
Webster's Third New International Dictionary, Unabridged
Search result show the entry is found in: 
astronomer royal
 , or 
radio astronomer
 , or 
x-ray astronomer

as·tron·o·mer
\əˈstränəmə(r)\ noun
(-s)
Etymology: Middle English, alteration of astronomien, from Middle French, from Late Latin astronomus (from Greek astronomos) + Middle French -ien -ian
1. obsolete : 
astrologer

2. : one skilled in astronomy : one having a knowledge of the laws and phenomena of the celestial bodies : one that makes observations of celestial phenomena

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