diacaustic

Definitions

1. 1.(Med.) That which burns by refraction, as a double convex lens, or the sun's rays concentrated by such a lens, sometimes used as a cautery.
2. 2.(Math.) A curved formed by the consecutive intersections of rays of light refracted through a lens.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

Related questions

• What does "diacaustic" mean?

Reverse-dictionary questions

Definition-first questions whose answer is diacaustic.

• What is that which burns by refraction, as a double convex lens, or the sun's rays concentrated by such a lens, sometimes used as a cautery called?
• What is a curved formed by the consecutive intersections of rays of light refracted through a lens called?