13-letter words containing p, i, l, o, n
- unpolarizable — not capable of being polarized
- unproblematic — not problematic, not causing difficulties or confusion; uncomplicated
- unpromisingly — in a manner that is not showing any promise of favourable development or future success
- unprovokingly — serving to provoke; causing annoyance.
- unresponsible — answerable or accountable, as for something within one's power, control, or management (often followed by to or for): He is responsible to the president for his decisions.
- vicente lopez — a city in E central Argentina, N of Buenos Aires.
- vinyl polymer — any of a group of compounds derived by polymerization from vinyl compounds, as vinyl acetate and styrene.
- violin spider — brown recluse spider.
- volute spring — a coil spring, conical in shape, extending in the direction of the axis of the coil.
- walter piston — Walter, 1894–1976, U.S. composer.
- xiphiplastron — the fourth lateral plate of a turtle's plastron
- zooplanktonic — Of or pertaining to zooplankton.