sawtooth wave

Etymology
From, named for its resemblance to the jagged teeth of a saw when graphed.

Noun

 * 1)  A function or waveform that repeatedly ramps upwards (usually linearly) and then sharply drops.

Translations

 * Chinese:
 * Mandarin: 鋸齒波
 * Dutch: zaagtandgolf,
 * Estonian: saehammaslaine
 * Finnish: sahalaita-aalto,
 * French: onde en dents de scie
 * German: Sägezahnschwingung
 * Italian: onda a dente di sega
 * Japanese: 鋸|のこぎり波
 * Portuguese: onda dente de serra
 * Russian: пилообра́зная волна́
 * Swedish: sågtandsvåg,