WordNet-Online
Free dictionary and thesaurus of English. Definitions, synonyms, antonyms and more...
Hint: double-click any word to get it searched!

	Enter your search terms Submit search form
	Web www.wordnet-online.com

Definitions from WordNet

Definitions from the Web

Calabar Bean

Definition:

The Calabar bean is a seed derived from a West African plant known as Physostigma venenosum. It contains toxic compounds that have medical applications as a powerful poison and a therapeutic agent.

Usage:

There are two main senses of the term "calabar bean":

1. Poison:

In this sense, the calabar bean refers to a deadly poisonous substance derived from the seeds of the Physostigma venenosum plant. It contains physostigmine, a potent toxin affecting the central nervous system.

Example sentences:

• The use of the calabar bean as a poison dates back centuries in African history.
• Extreme caution must be exercised when handling calabar beans due to their high toxicity.

2. Medicinal Use:

The calabar bean is also used medicinally due to the presence of physostigmine, which acts as a cholinergic agent, affecting the neurotransmitter acetylcholine in the body. It is used to treat certain medical conditions, especially those affecting the eye.

Example sentences:

• Physicians prescribe medicine derived from the calabar bean to treat glaucoma.
• The therapeutic properties of calabar beans make them valuable in ophthalmology.

Related Products:

Find related products on Amazon:

• Physostigma venenosum seeds
• Cholinergic agents
• Glaucoma treatment