| delta wing | (n) an airplane with wings that give it the appearance of an isosceles triangle |
| 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 |
| デルタ波 | [デルタは, deruta ha] (n) delta wave [Add to Longdo] |
| 三角翼 | [さんかくよく, sankakuyoku] (n) delta wing [Add to Longdo] |