Definition of solid Home › Forums › setting the stage › solids as quantum systems › Definition of solid This topic has 0 replies, 1 voice, and was last updated 1 day, 3 hours ago by chinmay. Viewing 1 post (of 1 total) Author Posts June 26, 2026 at 1:24 pm #14685 chinmayParticipant A solid is a state of matter is which the atoms can only vibrate about their fixed positions. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In