19-letter words containing a, c, t, u, l, y
- the channel country — an area of E central Australia, in SW Queensland: crossed by intermittent rivers and subject to both flooding and long periods of drought
- ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
- ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
- unconstitutionality — not constitutional; unauthorized by or inconsistent with the constitution, as of a country.
- valencian community — region comprising three provinces of E Spain: 8,998 sq mi (23,305 sq km); pop. 4,029,000; cap. Valencia
- velocity modulation — the modulation in velocity of a beam of electrons or ions caused by passing the beam through a high-frequency electric field, as in a cavity resonator
- volumetric analysis — determination of the concentration, by volume, of a substance in a solution, as by titration.
- what-do-you-call-it — whachamacallit.