1. to excite or stimulate beforehand; to arouse in advance
Usage: technical or formal usage; often used in medical or physiological contexts
2. in cardiology, to cause premature excitation of the heart muscle, especially via an accessory pathway
Usage: medical/technical

Examples

• The drug was designed to preexcite the nervous system before the main stimulus.
• In Wolff-Parkinson-White syndrome, an accessory pathway can preexcite the ventricles.
• Researchers preexcite the tissue sample to observe its response.
• The electrical impulse will preexcite the cardiac muscle through the anomalous pathway.