NeoDict for iPhone.

Available free in the App Store

View
NeoDict for Android.

Available free in the Play Store

View
English Dictionary
▪ delta iron▪ delta ray▪ delta rhythm▪ delta wave▪ deltoid
◊ delta rhythm
delta rhythm
n : the normal brainwave in the encephalogram of a person in
deep dreamless sleep; occurs with high voltage and low
frequency (1 to 4 hertz) [syn: {delta wave}]