un·con·for·mi·ty 
(ŭn′kən-fôrmĭ-tē)
(ŭn′kən-fôrmĭ-tē)n. pl. un·con·for·mi·ties
1. Lack of conformity; nonconformity.
2. Geology A surface between successive strata representing a missing interval in the geologic record of time, and produced either by an interruption in deposition or by the erosion of depositionally continuous strata followed by renewed deposition.
- x-ray
- x-ray astronomy
- x-ray burster
- x-ray crystallography
- x-ray diffraction
- x-ray fish
- x-ray microscope
- x-ray photoemission spectroscopy
- x-ray spectrometer
- x-ray spectrometry
- x-ray spectroscope
- x-ray spectroscopy
- x-ray star
- x-ray therapy
- x-ray tube
- Xuthus
- Xuzhou
- xyl-
- xyl-
- xylan
- xylem
- xylene
- xylidine
- xylitol
- xylo-