Definition of a solid Home › Forums › setting the stage › solids as quantum systems › Definition of a solid This topic has 0 replies, 1 voice, and was last updated 15 hours, 18 minutes ago by Mavyline. Viewing 1 post (of 1 total) Author Posts December 30, 2025 at 6:15 am #14387 MavylineParticipant A solid is matter that exists having a definite shape, mass and volume 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