hum

(redirected from hummed)
Also found in: Dictionary, Thesaurus, Medical, Idioms.
Related to hummed: hummable

hum

Electronics an undesired low-frequency noise in the output of an amplifier or receiver, esp one caused by the power supply

Hum

 

the name given during the Middle Ages to the region between Dubrovnik and the Neretva River. The earliest surviving reference to Hum dates from the 10th century and describes the region as subject to the Serbian prince Mihajlo Višević. Late in that century the region became part of Samuil’s state, and in 1018 it fell under Byzantine control. Hum became part of Zeta in the second half of the 11th century, part of the Nemanja state in the late 12th century, and part of Bosnia in the 1320’s. Duke (herceg) Stepan Vukčić took control of Hum in the 1440’s. The duke’s dominions, of which Hum constituted a major part, became known as Hercegovina in the mid-15th century.

hum

[həm]
(electricity)
A sound produced by an iron core of a transformer due to loose laminations or magnetostrictive effects; the frequency of the sound is twice the power line frequency.
(electronics)
An electrical disturbance occurring at the power supply frequency or its harmonics, usually 60 or 120 hertz in the United States.
References in periodicals archive ?
They included Debra Allon, who runs the Bathtime Boutique in the market and hummed Home And Away; Tia Naisbett from Finlay's Quality Butchers, who foxed them with Adele's Someone Like You, and Market Leisure employee - and Lady Gaga fan - Leighton Allsopp who chose a favourite, Bad Romance.
Nagy hummed along with what sounded like a curious mixture of a low-pitched drone and a whistling wind.
For half a day in April 1999, Shishaldin Volcano in the Aleutians hummed.