Select the option that can be used as a one-word substitute for the given group of words. A medicine used to nullify the effect of poison
Finding the Right Word: Medicine for Poison Effect
The question asks for a single word that describes a medicine used to counteract or nullify the effect of poison. Let's examine the given options to determine which one fits this description.
Understanding the terms is key to answering this type of vocabulary question. We need to find a word specifically related to medicines that treat poisoning.
Analyzing the Options
Here is a breakdown of the options provided:
| Option | Definition | Relevance to the Question |
| Antidote | A medicine or other substance taken or given to counteract a particular poison. | Directly matches the description provided in the question. It is used to nullify the effect of poison. |
| Antibiotic | A medicine used to prevent or treat infections caused by bacteria. | Treats bacterial infections, not the effects of poison. |
| Antigen | A toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies. | A substance that triggers an immune response; not a medicine used to treat poison. |
| Antiseptic | Relating to or inhibiting the growth of microorganisms. Often used on the skin or other surfaces to prevent infection. | Used to kill or inhibit microorganisms on surfaces; not a medicine taken internally to treat poison. |
Identifying the Correct Term for Nullifying Poison
Based on the definitions, the term that specifically refers to a medicine used to nullify or counteract the effect of poison is Antidote.
Let's look at why the other options are not suitable:
- Antibiotic is for bacterial infections.
- Antigen is a substance that causes an immune response, not a treatment for poison.
- Antiseptic is used externally or on surfaces to prevent infection by killing microbes.
Therefore, the only word among the options that serves as a one-word substitute for "A medicine used to nullify the effect of poison" is Antidote.
Revision Table: Key Terms
| Term | Meaning in Context |
| Poison | A substance that, when introduced into or absorbed by a living organism, causes death or injury. |
| Nullify | To make legally null and void; invalidate. Or, to make of no use or value; cancel out. In this context, to cancel out the effect. |
| Antidote | A remedy that stops or controls the effects of a poison. |
Additional Information on Related Medical Terms
It's helpful to distinguish between similar-sounding medical terms:
- Antitoxin: A substance formed in the body as a result of introducing a toxin (a type of poison produced by bacteria or other biological sources). An antitoxin can also be administered to counteract a specific toxin.
- Vaccine: A substance used to stimulate the production of antibodies and provide immunity against one or several diseases, typically prepared from an inactivated or weakened form of the pathogen or its toxins.
- Painkiller (Analgesic): A medicine used to relieve pain.
While an antidote counteracts the direct effects of a poison, other treatments might be needed depending on the type of poison and its effects, such as supportive care or other medications.
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