14-letter words containing um
- umbrella stand — an upright rack or stand for umbrellas
- uncircumcision — the state or condition of being uncircumcised.
- under-consumed — to destroy or expend by use; use up.
- unhumanitarian — having concern for or helping to improve the welfare and happiness of people.
- unilluminating — not serving to instruct or give insights
- unpresumptuous — not presumptuous; modest
- uranium dating — a method of dating archaeological or geological specimens by determining the decay activity of the uranium in a given sample.
- uranium series — the radioactive series that starts with uranium 238 and ends with a stable isotope of lead of mass number 206.
- vacuum casting — the casting of metal within a vacuum.
- vacuum cleaner — an electrical appliance for cleaning carpets, floors, etc., by suction.
- vacuum forming — a process in which a sheet of warmed thermoplastic is shaped by placing it in a mould and applying suction
- vacuum molding — Vacuum molding is a type of molding in which pressure is applied by introducing a vacuum on the side of the mold.
- vacuum residue — Vacuum residue is the substance which is obtained by vacuum distillation (= a process of separating substances by reducing pressure to less than atmospheric pressure).
- vanadium steel — an alloy steel containing vanadium.
- venetian sumac — smoke tree (def 2).
- vickers number — a numerical expression of the hardness of a metal as determined by a test (Vickers test) in which the sample is indented under a known pressure by the point of a diamond and the surface area of the indentation is divided into the amount of pressure applied.
- vitreous humor — the transparent gelatinous substance filling the eyeball behind the crystalline lens.
- volume control — switch used to adjust level of sound
- volumetrically — of or relating to measurement by volume.
- winding number — the number of times a closed curve winds around a point not on the curve.
- without number — of too great a quantity to be counted; innumerable
- xiphihumeralis — a long pectoral muscle found only in felines
- yttrium metals — a series of closely related metals including yttrium, holmium, erbium, thulium, ytterbium, lutetium, and sometimes, terbium, gadolinium, and dysprosium
- yttrocolumbite — Yttrotantalite.
- zeno of citium — c340–c265 b.c, Greek philosopher, born in Cyprus.
- zonal geranium — a widely cultivated plant, Pelargonium hortorum, having white, pink, or red flowers and rounded leaves that are sometimes banded or blotched with contrasting colors.
- zygosporangium — a sporangium that bears a zygospore.