Trace Elements

**Definition:** A group of chemical elements that are needed in minute quantities for the proper growth, development, and physiology of an organism. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

**Tree numbers:** - D01.268.811 - D27.505.696.494.555 - G07.203.300.681.500.555 - J02.500.681.500.555

**Synonyms:** - Trace Element