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Bunsen burner a burner that has holes at the bottom where air enters, mixes with gas, and makes a hot blue flame. Bunsen burners are used in laboratory experiments.
lab1 a short form of laboratory.
synthetic made with chemicals formed in a laboratory instead of something found in nature; man-made; artificial. [2 definitions]
vaccine a substance used to protect people and animals from very serious diseases. Vaccines contain germs of a particular disease--these germs been killed or changed in a certain way in a laboratory to make them safe. A vaccine goes into a person's body in a shot that is given by a doctor or nurse. After a vaccine is put into a person's body, that person will not get that disease or will get only a mild case.