Author: Glossary
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Ampulla of rectum
Slight dilatation of the rectum proper just before continuing as the anal canal. Also called infraperitoneal portion of rectum proper.
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Ampulla of lacrimal duct
Slight dilatation of the lacrimal duct medial to the punctual.
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Hepatopancreatic ampulla
The entry of the common bile duct and main pancreatic duct into the duodenum.
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Ampulla ductus deferentis
An irregular and nodular dilatation of the vas deferens just before its junction with the secretory duct of the seminal vesicle.
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Amplitude modulation
Altering the height (amplitude) of an electrical or acoustical wave.
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Amplifier
That which enlarges, extends, increases, or makes more powerful.
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Amplicon
An amplified segment of specific DNA or RNA sequences, i.e., one in which multiple copies of the nucleic acid sequences are found. Amplicons can be made during polymerase chain reactions or may occur spontaneously, e.g., in the nucleic acid content of certain organisms or tumors.
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Amphoterodiplopia
Double vision in each eye.
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Amphoterism
State of reacting as both an acid and a base.
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Amphoteric reaction
Reaction in which a compound reacts as both an acid and a base. The behavior of a compound, acting either as an acid or a base, is determined by the substance it interacts with.