Uncertain; possibly a variant of Tiara or Tierra.
Tyera is a modern American coinage with multiple potential influences. It is often used as a creative phonetic variant of the English word 'tiara,' referring to a jeweled crown, or the Spanish word 'tierra,' meaning earth. Its usage follows the late 20th-century trend of adding 'y' and 'a' suffixes to create unique feminine names.
Less common today
Tyera isn't in the latest US Top 1000. It last peaked at #6,986 in 1993.
US births per 5-year period, 1990βpresent (SSA data).