出《素問(wèn)·通評(píng)虛實(shí)論》。①指嬰兒。吳崑注:“乳子,乳下嬰孩也?!雹谥府a(chǎn)育?!墩f(shuō)文》:“人與鳥(niǎo)生子曰乳,獸曰產(chǎn)?!雹壑覆溉??!?a target="_blank" href="/zhongyi/zy67283lo/">張氏醫(yī)通》:“乳子言產(chǎn)后以哺乳時(shí),非嬰兒也?!?/p>