Full Definition of SEMICONDUCTOR. : any of a class of solids (as germanium or silicon) whose electrical conductivity is between that of a conductor and that of an insulator in being nearly as great as that of a metal at high temperatures and nearly absent at low temperatures.ull Definition of SEMICONDUCTOR. : any of a class of solids (as germanium or silicon) whose electrical conductivity is between that of a conductor and that of an insulator in being nearly as great as that of a metal at high temperatures and nearly absent at low temperatures.
Do-It-Yourself Christmas Ornaments. These do it yourself Christmas ornaments, made of sticks and yarn, can be a fun project for the whole family. Add a unique touch to your do it yourself Christmas ornaments by using multiple yarn colors. Content Tools.
Turn to Hallmark for gifts, cards and ornaments for your holidays, lifeâs everyday moments, and celebrations big and small. On Hallmark.com you can find the perfect gift for every occasion, traditional and non-traditional alike: 1  Greeting cards are the perfect way to add meaning to occasions like Christmas or other holidays, as well as weddings, new babies and other life events throughout the year.