HELIOMICROMETER


Meaning of HELIOMICROMETER in English

|hēlē(ˌ)ō+ noun

Etymology: heli- (I) + micrometer

: an instrument for determining heliographic positions of spots and flocculi shown on direct photographs of the sun or on spectroheliograph plates

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.