Cross training
Cross training: Doing two or more aerobic activities such as jogging, bicycling, and swimming on a regular basis.
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- Cross-section
Cross-section: In anatomy, a transverse cut through a structure or tissue. The opposite is longitudinal section.
- Cross-sectional study
Cross-sectional study: A research study done at one time, not over the course of time. A cross-sectional study might be a study of a disease such as AIDS at one point in time, to learn its prevalence and distribution within the population. Also known as a synchronic study.
- Crossed embolism
Crossed embolism: Passage of a clot (thrombus) from a vein to an artery. When clots in veins break off (embolize) , they travel first to the right side of the heart and, normally, then to the lungs where they lodge. The lungs act as a filter to prevent the clots from entering the arterial circulation. […]
- Crossing over
Crossing over: Exchanging genetic material between two paired chromosomes. Crossing over is a way to recombine the genetic material so that each person (except for identical twins) is genetically unique.
- Crossover study
Crossover study: A type of clinical trial in which the study participants receive each treatment in a random order. With this type of study, every patient serves as his or her own control. Crossover studies are often used when researchers feel it would be difficult to recruit participants willing to risk going without a promising […]