19-letter words containing a, c, y, l, i, u
- 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.