18-letter words containing a, q, u, t
- st. peter's square — a square surrounded by colonnades, forming a boundary of and an entrance to Vatican City, leading to St. Peter's: designed by Giovanni Bernini and built during the 17th century.
- super royal quarto — a book size, 101⁄4 by 131⁄2 inches
- teaching equipment — teaching aids
- the mosque of omar — the mosque in Jerusalem, Israel, built in 691 ad by caliph 'Abd al-Malik: the third most holy place of Islam; stands on the Temple Mount alongside the al-Aqsa mosque
- the queen of sheba — a queen of the Sabeans, who visited Solomon (I Kings 10:1–13)
- three-quarter time — the meter of a musical composition having a time signature of 3/4 and three quarter notes or their equivalent in each measure.
- tranquillizer dart — a dart filled with a tranquillizer that is shot from a gun in order to temporarily sedate an animal so that it may be handled safely
- traveller's cheque — Traveller's cheques are cheques that you buy at a bank and take with you when you travel, for example so that you can exchange them for the currency of the country that you are in.
- trente et quarante — rouge et noir.
- ultralow frequency — an electromagnetic wave with a frequency between 300 and 3000 hertz. Abbreviation: ULF, ulf.