Sentence:  Note that the mass scale is one to two orders of magnitude greater than some previously used ; for example , Jacchia ( 1948 ) derived a scale of 0.15 g for a * * f , zero magnitude <WSD>meteorite</WSD> . 
Meaning of the word marked with <WSD> tags:  stony or metallic object that is the remains of a meteoroid that has reached the earth's surface