| trace element |
A chemical found in very small amounts in a given substance. Organisms need certain trace elements to survive.
출처: www.stjude.org/glossary
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| tracheoesophageal puncture |
A small opening made by a surgeon between the esophagus and the trachea. A valve keeps food out of the trachea but lets air into the esophagus for esophageal speech.
출처: www.stjude.org/glossary
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| tracheostomy |
Surgery to create an opening (stoma) into the windpipe. The opening itself may also be called a tracheostomy.
출처: www.stjude.org/glossary
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| traction |
Movement by rolling, sliding, or dragging of sediment fragments along a stream bottom. (See page(s) 231)
출처: highered.mcgraw-hill.com/sites/0072402466/student_...
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| trace |
1. In general, an unmeasurable (less than 0.01 in.) quantity of precipitation. 2. An insignificantly small quantity. 3. The record made by any self-registering instrument. Thus, one may speak of the barograph trace, the hygrothermograph trace, etc.
출처: amsglossary.allenpress.com/glossary/browse
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