12-letter words containing a, x, i, n, o
- overtaxation — to tax too heavily.
- oxidant smog — photochemical smog.
- paradoxidian — relating to the genus Paradoxides
- paradoxurine — relating to the palm civet
- peroxidation — a type of reaction in which oxygen atoms are formed leading to the production of peroxides. It is stimulated in the body by certain toxins and infections
- phycoxanthin — a yellow pigment found in brown seaweeds and types of algae
- polysiloxane — a polymer composed of silicon and oxygen atoms
- praxinoscope — a toy in which a sequence of images, depicted on the inner surface of a cylinder and reflected in a series of mirrors, gives the illusion of motion as the cylinder rotates
- pyridoxamine — a metabolic form of pyridoxine
- reannexation — the act or process of reannexing something
- sulphadoxine — an antibiotic drug of the sulphonamide group, commonly used in combination with pyrimethamine to treat malaria, and in combination with various drugs to treat certain infections
- thioxanthene — any of a class of antipsychotics, as thiothixene, used to relieve symptoms of severe psychiatric disorders.
- twin paradox — a phenomenon predicted by relativity. One of a pair of identical twins is supposed to live normally in an inertial system whilst the other is accelerated to a high speed in a spaceship, travels for a long time, and finally returns to rest beside his twin. The travelled twin will be found to be younger than his brother
- uranic oxide — uranium dioxide.
- vox angelica — an organ stop with a soft tone, often similar to the voix céleste
- xanthochroia — a condition causing yellow patches on the skin similar to xanthoma
- xanthochroid — of, relating to, or designating races having light-coloured hair and a pale complexion
- xanthopterin — a yellow pigment, C6H5N5O2, found in some butterfly or moth wings or in the urine of mammals
- xenoreactive — (immunology) That generates a reaction to material from another species.