"X-rated" Natural Recordings by Native Speakers
Describing material, especially a film or performance, that deals with sex and is intended for adults only. Symbolically represented by the Roman numeral "X", indicating it may only be purchased or displayed by people 18 years or older.
A shortened form of "Christmas", referring to the annual festival commemorating the birth of Jesus Christ, observed primarily on December 25.
(X-rayed) Past tense of "x-ray". Having been seen or examined using X-rays, which are a type of radiation. This means someone or something has been checked or inspected to see inside them using this imaging technology.
X-rays are a type of electromagnetic radiation used to produce images of the internal structures of the body, particularly bones and joints. They are called "x" because they were discovered by accidentally by Wilhelm Conrad Röntgen in 1895 when he noticed that a fluorescent screen in his lab was glowing even though it was not exposed to any light.
X-SAMPA, or the Extended Speech Assessment Methods Phonetic Alphabet, is a phonetic notation with distinct symbols for 137 non-language dependent units of sound, used for making dictionaries, speech reserved applications, and transcribing speech in many languages for phonetic studies.