noun🔗Shareحجر الخفافA light, porous type of pyroclastic igneous rock, formed during explosive volcanic eruptions when liquid lava is ejected into water or air as a froth containing masses of gas bubbles. As the lava solidifies, the bubbles are frozen into the rock."The geologist carefully examined the piece of pumice, noticing its light weight and many tiny holes. "فحص عالم الجيولوجيا بعناية قطعة حجر الخفاف، ولاحظ وزنه الخفيف وثقوبه الصغيرة العديدة.geologymaterialsubstancenaturescienceChat with AIVocabulary GamePractice Reading
verb🔗Shareحك بالخفافTo abrade or roughen with pumice."She used a pumice stone to pumice the calluses on her feet. "استخدمت حجر الخفاف لحك النسيج المتصلب على قدميها.materialgeologyactionChat with AIVocabulary GamePractice Reading
