• An enlarged thyroid gland that creates a lump in the neck.
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• An enlarged thyroid. It may be caused by too little iodine in the diet or by other conditions. Most goiters are not cancer.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• An enlargement of the thyroid gland.
  Human Phenotype Ontology (HPO)
  The Human Phenotype Ontology Project, 2021
• Enlargement of the THYROID GLAND that may increase from about 20 grams to hundreds of grams in human adults. Goiter is observed in individuals with normal thyroid function (euthyroidism), thyroid deficiency (HYPOTHYROIDISM), or hormone overproduction (HYPERTHYROIDISM). Goiter may be congenital or acquired, sporadic or endemic (GOITER, ENDEMIC).
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• Enlargement of the thyroid gland usually caused by lack of iodine in the diet, hyperthyroidism, or thyroid nodules. Symptoms include difficulty in breathing and swallowing.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• Enlargement of the thyroid gland.
  CRISP Thesaurus
  National Institutes of Health, 2006
• In 1656, Thomas Wharton described the distinct nature of what he termed the thyroid gland, distinguishing it from the larynx, as this structure had been considered a laryngeal gland from the time of Andreas Vesalius in the 16th century. It was nearly 200 more years before the function of the thyroid was elucidated.
  Medscape
  WebMD, 2019
• A goiter (GOI-tur) is an abnormal enlargement of your thyroid gland. Your thyroid is a butterfly-shaped gland located at the base of your neck just below your Adam's apple. Although goiters are usually painless, a large goiter can cause a cough and make it difficult for you to swallow or breathe.
  Mayo Clinic
  Mayo Foundation for Medical Education and Research
• Goitre, enlargement of the thyroid gland, resulting in a prominent swelling in the front of the neck. The normal human thyroid gland weighs 10 to 20 grams (about 0.3 to 0.6 ounce), and some goitrous thyroid glands weigh as much as 1,000 grams (more than 2 pounds). The entire thyroid gland may be...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2020