Earth formed around 4.54 billion years ago by accretion from the solar nebula. Volcanic outgassing probably created the primordial atmosphere and then the ocean; but the atmosphere contained almost no oxygen and so would have been toxic to most modern life including humans.
Euthyroid is the state of having normal thyroid gland function. Examples of a nonfunctioning thyroid gland may be hypothyroidism, hyperthyroidism, or thyroiditis.
Greek form of EUTHYMIUS. EUTHYMIUS ÎµÏÎ¸ÏÎ¼Î¹Î¿Ï m Ancient Greek (Latinized). Latinized form of the Greek name ÎµÏÎ¸ÏÎ¼Î¹Î¿Ï (Euthymios) which meant in good spirits, derived from the word ÎµÏÎ¸ÏÎ¼Î¿Ï (euthymos) , which was composed of the elements ÎµÏ (eu) good and Î¸ÏÎ¼Î¿Ï (thymos) soul, spirit ...