1. hypothyroidism

noun. an underactive thyroid gland; a glandular disorder resulting from insufficient production of thyroid hormones.


  • glandular disease
  • myxoedema
  • myxedema
  • adenosis
  • gland disease
  • glandular disorder


  • hyperparathyroidism
  • hypoparathyroidism
  • thyrotoxicosis
  • glandular disease

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Sentences with hypothyroidism

1. Noun, singular or mass
There’s a good chance that if your vet does a routine blood test on your horse, both these hormones will be low, tempting a diagnosis of hypothyroidism.

2. Verb, past participle
If you have hypothyroidism and take thyroid hormone — Synthroid, Levoxyl or Tirosint brands of levothyroxine — you may wonder if there are foods that might interfere with its absorption or boost its potency.