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antiseptic a substance or drug that kills germs that cause disease or decay.
bacteria microscopic organisms that often play a role in the decay of living things, the process of fermentation, and sometimes in causing disease. Bacteria are each made up of only one cell, but different kinds of bacteria can take different shapes. These organisms live in all parts of the earth including oceans, deserts, glaciers, hot springs, and in the bodies of most living things. While some kinds of bacteria are dangerous, most kinds are useful because they help in the digestion of food, in the making of soil, in the creation of medicines, and in many other natural processes.
caries bone or tooth decay.
crumble to fall into small bits; decay. [1/2 definitions]
decompose to decay.
dilapidated fallen into ruin or decay.
ebb to weaken or become less; decay. [1/3 definitions]
fluorine a substance that is a chemical element. Fluorine combines easily with other elements to form compounds. Some of these compounds are used to prevent tooth decay. Fluorine is poisonous in its pure gas form. (symbol: F)
radioactive giving off energy as a result of the decay of unstable atoms.
radioactivity the giving off of energy as a result of the decay of unstable atoms.
rot to decompose or decay. [4 definitions]
spoil to go rotten; decay. [1/4 definitions]