13-letter words containing x, d, a
- tax schedules — the different ways of classifying income under tax law
- titanic oxide — a white, water-insoluble powder, TiO 2 , used chiefly in white pigments, plastics, ceramics, and for delustering synthetic fibers.
- ultraorthodox — extremely or excessively orthodox, esp with regards to religion
- unexaggerated — not exaggerated or overblown
- uranium oxide — any of the compounds of uranium and oxygen, as UO 2 , UO 3 , U 4 O 9 , or U 3 O 8 .
- xenodiagnosis — a method of diagnosing certain diseases caused by insects, ticks, or other vectors, by allowing uninfected vectors to feed on the patient and later examining them for infections.