Term Name:	thyroid primordium
Synonyms:	thyroid primordia
Definition:	The initial thyroid precursor, the thyroid primordium, starts as a simple midline thickening and develops to form the thyroid diverticulum. This structure is initially hollow, although it later solidifies and becomes bilobed. The 2 lobes are located on either side of the midline and are connected via an isthmus.
Ontology:	Cell Ontology [UBERON:0003091]