Term: delta rhythm: the normal brainwave in the encephalogram of a person in deep dreamless sleep; occurs with high voltage and low frequency (1 to 4 hertz)
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: simulcast: a broadcast that is carried simultaneously by radio and television (or by FM and AM radio)
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: water elm: Eurasian elm closely resembling the American elm; thrives in a moist environment
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: double digit: a two-digit integer; from 10 to 99
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: intestinal bypass: surgical operation that shortens the small intestine; used in treating obesity
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: real time: (computer science) the time it takes for a process under computer control to occur
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: artery of the penis bulb: a branch of the internal pudendal artery of males that supplies the bulb of the penis
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: international development association: an agency of the United Nations affiliated with the World Bank
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: jerboa kangaroo: brush-tailed rat kangaroo
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: luciferin: pigment occurring in luminescent organisms (as fireflies); emits heatless light when undergoing oxidation
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: neurotoxin: any toxin that affects neural tissues