trigonometrist

From trigonometry +‎ -ist.

trigonometrist (plural trigonometrists)

1. (mathematics) One who does trigonometry.
   • 2011, Michele Audin, Remembering Sofya Kovalevskaya, Springer Science & Business Media, page 34:

     During his next visit, very proud of herself, the young trigonometrist began to speak about the book to its author.