|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
hypothyroidism hy·po·thy·roid·ism (hī'pō-thī'roi-dĭz'əm)
Insufficient production of thyroid hormones.
A pathological condition resulting from thyroid insufficiency, which may lead to cretinism or myxedema.