17-letter words starting with astro
- astronomical unit — a unit of distance used in astronomy equal to the mean distance between the earth and the sun. 1 astronomical unit is equivalent to 1.495 × 1011 metres or about 9.3 × 107 miles
- astronomical year — year (def 4b).
- astrophotographer — A person, especially an astronomer, who takes photographs of the stars.
On this page, we collect all 17-letter words starting with ASTRO. It’s easy to find right word with a certain length. It is the easiest way to find 17-letter word that beginning with ASTRO to use in Scrabble or Crossword puzzles.