Though not the most common occurrence, Automation Engineers sometimes become Automation Engineering Managers, where the average income is $105K per year.
For example, the antrum of the stomach (gastric antrum) is a portion before the outlet, which is lined by mucosa and does not produce acid. The paranasal sinuses can be referred to as the frontal antrum, ethmoid antrum, and maxillary antrum.
Freebase(0.00 / 0 votes)Rate this definition: Antrum. In biology, antrum is a general term for a cavity or chamber which may have specific meaning in reference to certain organs or sites in the body. The word Antrum can also be used as a surname in certan parts of the world.