13-letter words containing f, u, l, i, n
- unrectifiable — able to be rectified.
- unrefined oil — oil that hasn't been refined or processed
- unsatisfiable — not able to be satisfied
- unspecifiable — not able to be specified
- unsuperficial — external or outward: a superficial resemblance.
- unvitrifiable — not able to be vitrified
- user-friendly — easy to use, operate, understand, etc.: the most user-friendly personal computer now on the market.
- volcanic tuff — tuff2 .
- walnut family — the plant family Juglandaceae, characterized by deciduous trees having alternate, pinnately compound leaves, male flowers in tassellike catkins and female flowers in clusters, and edible nuts enclosed in a thick-walled or leathery husk, and including the butternut, hickory, pecan, and walnut.
- wolffian duct — a duct, draining the mesonephros of the embryo, that becomes the vas deferens in males and vestigial in females.
- working fluid — a liquid or gaseous working substance.