a printed circuit board added to a computer that enhances the CPU with a faster microprocessor.
- Accelerator factor
accelerator factor accelerator factor n. See factor V.
- Accelerator fiber
accelerator fiber accelerator fiber n. Any of the postganglionic sympathetic nerve fibers that originate in the superior middle and inferior cervical ganglia of the sympathetic trunk and convey impulses to the heart that tend to increase the rapidity and force of the cardiac pulsations.
- Accelerator mass spectrometry
a type of mass spectrometry used in radiocarbon dating in which the proportion of carbon isotopes is counted directly, as contrasted with the indirect Geiger counter method, using an accelerator that drastically reduces the quantity of datable material required.
- Accelerator globulin
accelerator globulin accelerator globulin n. Variant of serum accelerator globulin.