any of the slowest electrical brain waves, having frequencies less than four hertz and indicating, in adults, deep sleep or brain disease
: also delta rhythm
delta wave in American English
noun
Physiology
any of the slow brain waves constituting delta rhythm
Word origin
[1935–40]This word is first recorded in the period 1935–40. Other words that entered Englishat around the same time include: Rhodesian ridgeback, aeroembolism, fluorocarbon, unit trust, walk-through
Examples of 'delta wave' in a sentence
delta wave
The delta wave morphology was suggestive of a posteroseptal pathway.
Krishna Kumar Mohanan Nair, Anees Thajudeen, Narayanan Namboodiri, Ajitkumar Valaparambil 2017, 'Wide QRS tachycardia in a patient with pre excitation; what are the pathways involved?Pacing manoeuvres to characterize a unique pathway', Indian Pacing and Electrophysiology Journalhttp://www.sciencedirect.com/science/article/pii/S0972629216314073. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Twenty-four-hour ambulatory cardiac rhythm monitoring showed an obvious delta wave only at night-time.
Taylan Akgün, Yeliz Güler, Semi Öztürk, Seyfettin Gürbüz, Ahmet Güler 2015, 'A Patient with Wolff-Parkinson-White Syndrome with No Delta Wave', Koşuyolu Heart Journalhttp://www.kosuyoluheartjournal.com/managete/fu_folder/2015-3/2015-18-3-149-150.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)