19-letter words containing i, n, q, u
- to pop the question — If you pop the question, you ask someone to marry you.
- triangle inequality — the theorem that the absolute value of the sum of two quantities is less than or equal to the sum of the absolute values of the quantities.
- ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
- very high frequency — any frequency between 30 and 300 megahertz. Abbreviation: VHF.