Term: silica: a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
Broader: chemical: material produced by or used in a reaction involving changes in atoms or molecules | Unrelated: biomedicine: the branch of medical science that studies the ability of organisms to withstand environmental stress (as in space travel)
Broader: chemical: material produced by or used in a reaction involving changes in atoms or molecules | Unrelated: lamb chop: chop cut from a lamb
Broader: chemical: material produced by or used in a reaction involving changes in atoms or molecules | Unrelated: glossopsitta: a genus of Loriinae
Broader: chemical: material produced by or used in a reaction involving changes in atoms or molecules | Unrelated: combatant: someone who fights (or is fighting)
Broader: chemical: material produced by or used in a reaction involving changes in atoms or molecules | Unrelated: aquatic plant: a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth
Broader: chemical: material produced by or used in a reaction involving changes in atoms or molecules | Unrelated: decoration: the act of decorating something (in the hope of making it more attractive)
Broader: chemical: material produced by or used in a reaction involving changes in atoms or molecules | Unrelated: hematology: the branch of medicine that deals with diseases of the blood and blood-forming organs
Broader: chemical: material produced by or used in a reaction involving changes in atoms or molecules | Unrelated: bronchitis: inflammation of the membranes lining the bronchial tubes
Broader: chemical: material produced by or used in a reaction involving changes in atoms or molecules | Unrelated: line of march: the route along which a column advances
Broader: chemical: material produced by or used in a reaction involving changes in atoms or molecules | Unrelated: simplification: elimination of superfluous details