diacaustic (not comparable)
Relating to the caustic curves formed by the refraction of light.
diacaustic (plural diacaustics)
A refracting lens, which can be used to cauterise.
The curve or surface formed by the intersection of refracted light rays.
Source: Wiktionary
Di`a*caus"tic, a. Etym: [Pref. dia- + caustic.] (Opt.)
Definition: Pertaining to, or possessing the properties of, a species of caustic curves formed by refraction. See Caustic surface, under Caustic.
Di`a*caus"tic, n.
1. (Med.)
Definition: 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. (Math.)
Definition: A curved formed by the consecutive intersections of rays of light refracted through a lens.
Source: Webster’s Unabridged Dictionary 1913 Edition
2 April 2025
(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”
The word “coffee” entered the English language in 1582 via the Dutch “koffie,” borrowed from the Ottoman Turkish “kahve,” borrowed in turn from the Arabic “qahwah.” The Arabic word qahwah was traditionally held to refer to a type of wine.
