A geometric term, used in astronomy and geography to measure either an arc equal to the 360th part of the circumference of a circle, or the angle it subtends to the circle's centre. It was referred to 16 times in the series:
| Episode | Reference |
|---|---|
| Time Squad | Blake ordered, 'Zen, three sixty degree survey'. |
| When the Liberator's crew were trying to get the projectile aboard the ship, Avon said, 'Down degree point zero one'. | |
| Breakdown | Jenna ordered, 'Lateral one eighty', after ordered Zen to reverse thrust at Standard 0.01. |
| Zen repeated, 'Lateral one eighty'. | |
| Redemption | Blake ordered Zen, 'direct vision three-sixty orbital scan'. |
| Blake ordered Zen to make a 'hundred eighty turn' at full lateral thrust. | |
| Blake told Zen, 'Activate force wall three sixty'. | |
| Volcano | Orac told Mori that if the attack force came in at 'zero three seven degrees approach' they would find the blind spot in Obsidian's detectors. |
| The Harvest of Kairos | when Zen was asked for a locator fix on the transporter, it said, 'Two two one four. Stationary orbit. Thirty-six degrees. Five-four-steady'. |
| Ultraworld | Avon gave Vila an order, 'ninety degrees lateral thrust'. |
| Moloch | Avon ordered Zen to give them a scan in a cone of 'sixty degrees'. |
| Zen said that Sardos was located at course 'zero degrees'. | |
| Terminal | Avon ordered Zen, 'Scan, three sixty orbital'. |
| Avon ordered Zen, 'Scan, three sixty orbital'. | |
| Orbit | Soolin said that the ellipse of the shuttle's flight path was 'three degrees lower' than it should be. |
| Pindar said that the shuttle had deviated from Egrorian's predicted course by 'five degrees'. |