An AA battery is a dry cell-type battery. It is commonly used in portable electronic devices. It measures 51mm in length and generally weighs approximately 23g. It is composed of a single chamber, it is more correctly referred to as a cell.

Antiaircraft artillery batteries are designed to deliver long-lasting power for high-tech electronics. It is 44.5 mm long and 10.5 mm in diameter, weighing around 11.5 grams. It is commonly used in electronic devices.

Abdominal CT scan is an imaging method that uses x-rays to create cross-sectional pictures of the belly area. CT stands for computed tomography. It rapidly creates detailed pictures of the belly area. The test may be used to study blood vessels, identify masses and tumors, including cancer, look for infections and kidney stones, or appendicitis. It uses a special X-ray machine to take detailed pictures of the organs and tissues of the abdomen.