Adjective:

1. derived from what is primary or original by two intermediate steps;

   "a thirdhand report"
   

Adverb:

1. by doubly indirect means;

   "I got the news thirdhand"
   

Thirden.瑟德thirdnum.第三；三分之一adj.第三的；三分之一的third-termer第三次服刑的人third selector第三选择器third integral第三积分Third Filtrate三油third-streamadj.第三乐流的third-person第三人称角色third-seededadj.三号种子third narrator第三人称叙事者third terminal第三终端third valvulae第三产卵瓣