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Heth, sometimes written Chet or Ḥet, is the eighth letter of the Semitic abjads, including Phoenician ḥēt 𐤇, Hebrew ḥēt ח , Aramaic ḥēṯ 𐡇, Syriac ḥēṯ ܚ, and Arabic ḥāʾ ح . Heth originally represented a voiceless fricative, either pharyngeal /ħ/, or velar /x/. In Arabic, two corresponding letters were ...
Chert. Chert ( / tʃɜːrt /) is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, [ 1] the mineral form of silicon dioxide (SiO 2 ). [ 2] Chert is characteristically of biological origin, but may also occur inorganically as a chemical precipitate or a diagenetic replacement, as in petrified wood.
Chat is fragments of siliceous rock, limestone, and dolomite waste rejected in the lead-zinc milling operations that accompanied lead - zinc mining in the first half of the 20th century. Historic lead and zinc mining in the Midwestern United States was centered in two major areas: the tri-state area covering more than 2,500 square miles (6,500 ...
Chet is a masculine given name, often a nickname for Chester, which means fortress or camp. It is an uncommon name of English origin, and originated as a surname to identify people from the city of Chester, England.
A chest tube (also chest drain, thoracic catheter, tube thoracostomy or intercostal drain) is a surgical drain that is inserted through the chest wall and into the pleural space or the mediastinum. The insertion of the tube is sometimes a lifesaving procedure. The tube can be used to remove clinically undesired substances such as air ...
Flail chest. A 3D reconstruction from a CT scan showing a flail chest. Arrows mark the rib fractures. Flail chest is a life-threatening medical condition that occurs when a segment of the rib cage breaks due to trauma and becomes detached from the rest of the chest wall. Two of the symptoms of flail chest are chest pain and shortness of breath.
Khat or qat, Catha edulis ( Amharic: ጫት ch’at; Oromo: Jimaa, Somali: qaad, jaat, khaad or khat, Arabic: القات al-qāt, Swahili: miraa, muguka, jaba, veve or aluta) is a flowering plant native to eastern and southeastern Africa. [ 2] It has a history of cultivation originating in the Harar area (present day eastern Ethiopia) and ...
Cheat sheet in front of a juice box. A cheat sheet (also cheatsheet) or crib sheet is a concise set of notes used for quick reference. Cheat sheets were historically used by students without an instructor or teacher's knowledge to cheat on a test or exam. [ 1] In the context of higher education or vocational training, where rote memorization is ...