| Title | heliograph |
|---|---|
| Text |
Merriam-Webster's Collegiate Dictionary he·lio·graph ETYMOLOGY International Scientific Vocabulary DATE 1877 : an apparatus for telegraphing by means of the sun's rays flashed from a mirror • heliograph transitive verb Oxford Advanced Learner's Dictionary-牛津双解-OALD7 heliograph he·lio·graph / 5hi:liE^rB:f; NAmE -^rAf / noun1. a device which gives signals by reflecting flashes of light from the sun 日光反射信号器；回光信号器；日光仪 2. (also he·lio·gram / 5hi:liE^rAm / ) a message which is sent using signals from a heliograph 日光反射信号；回光信号 3. a special camera which takes photographs of the sun (拍摄太阳用的)太阳照相仪 Webster's Third New International Dictionary, Unabridged he·lio·graph I. \-raf, -rȧf\ noun Etymology: International Scientific Vocabulary heli- (I) + -graph 1. a. : photoengraving 2b b. : photograph c. : photoheliograph 2. : an apparatus for telegraphing by means of the sun's rays thrown from a mirror — compare heliotrope 3II. verb : to signal by means of a heliograph |
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