← Back to browseserumnoun#9,835Translations血清けっせい美容液びようえきセラムセラム免疫血清めんえきけっせいEnglish definitionan amber, watery fluid, rich in proteins, that separates out when blood coagulatesExamplesThey used truth serum.Similar wordsserumsserseraserbsergserf← outsiderwhats →