"Reactionary" Natural Recordings by Native Speakers
Adjective: strongly opposed to reform or change; holding to traditional or conservative views.
Example: "He's a reactionary politician who opposes any change to the current system."
Reactants are the chemicals that are consumed or used up in a chemical reaction. They are the substances that react with each other to form new substances called products.
Antihistamines such as reactine (also known as diphenhydramine) are used to relieve symptoms of allergy such as itchiness, sneezing, and runny nose.