一切經音義 31.257

31.257

礠石（上字茲反呂氏春秋云礠石能召䥫是也古今正字從石慈聲）。

Loadstone (礠石: the upper character [礠] has the fanqie phonetic [zi] (字茲反). The Lüshi chunqiu states: "The loadstone can attract iron; this is it." In the Gujin zhengzi, it is derived from the stone radical (石) with the phonetic marker [ci] (慈)).