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re·act

react

 
 
pronunciation:
ri aekt
features:
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part of speech: verb
inflections: reacts, reacting, reacted
definition 1: When a person reacts to something, they feel or act in a certain way because of something that's happened. When people hear a joke that is funny, they usually react by laughing. When people hear something very sad, they might react by crying. If a person touches something very hot, they usually react by pulling their hand away. When an animal reacts, it responds to something. If a dog hears a knock at the door, it might react by barking. If a deer hears a loud noise, it might react by quickly leaping away.
Matt doesn't like bugs. When he saw a big one on the porch, he reacted by running into the house.Cody reacted in a strange way when he received the bad news. He just quietly went up to his room and closed the door. He didn't get upset or say anything.
definition 2: When chemicals are combined and they react, it means that they go through a change.
Rust is formed when iron reacts with hydrogen and oxygen.
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