Organ

Pronunciation

Definition 1

A part of the body that performs a specific function. For example, the heart is an organ. (NCI Dictionary)

Definition 2

A unique macroscopic (gross) anatomic structure that performs specific functions. It is composed of various tissues. An organ is part of an anatomic system or a body region. Representative examples include the heart, lung, liver, spleen, and uterus. (NCI Thesaurus)

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