19-letter words containing o, c, t, h, r, n
- zenithal projection — a type of map projection in which part of the earth's surface is projected onto a plane tangential to it, either at one of the poles (polar zenithal), at the equator (equatorial zenithal), or between (oblique zenithal)
- zero-hours contract — an employment contract which does not oblige the employer to provide regular work for the employee, but requires the employee to be on call in the event that work becomes available