The expression “coffee break” was first attested in 1952 in glossy magazine advertisements by the Pan-American Coffee Bureau.
DIHEDRAL
Etymology
Noun
dihedral (plural dihedrals)
(mathematics) An angle between two plane surfaces
(aeronautics) The upward slope of an aircraft's wing
(chemistry) The angle between pairs of chemical bonds separated by a third bond
Adjective
dihedral (not comparable)
(mathematics) Consisting of, relating to or contained between two plane surfaces.
(of a kite or an aeroplane) Having wings that form a dihedral angle, especially when the angle between the upper sides is less than 180°.
(aviation) Of wing pairs, inclined at an upward angle to each other.
Antonyms
• anhedral
Source: Wiktionary
Di*he"dral, a. Etym: [Gr. Diedral.]
Definition: Having two plane faces; as, the dihedral summit of a crystal. Dihedral angle, the angular space contained between planes which intersect. It is measured by the angle made by any two lines at right angles to the two planes.
Source: Webster’s Unabridged Dictionary 1913 Edition
Recent Word Finds
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30 January 2025
HYPERICISM
(noun) a severe dermatitis of herbivorous domestic animals attributable to photosensitivity from eating Saint John’s wort
Coffee Trivia
