中醫(yī)學(xué)名詞。精血或津液虧損的病理現(xiàn)象。因精血和津液都屬陰，故稱“陰虛”。《素問·調(diào)經(jīng)論》：“經(jīng)言陽虛則外寒，陰虛則內(nèi)熱?！薄夺t(yī)宗金鑒·張仲景＜傷寒論·陽明全篇＞》“脈浮而芤”注：“脈浮而芤，浮為陽盛，芤為陰虛?！?/p>

1.{中醫(yī)} deficiency of yin, with irritablity, thirst, constipation, etc. as symptoms