Crossword clues for frustum
The Collaborative International Dictionary
Frustum \Frus"tum\, n.; pl. L. Frusta, E. Frustums. [L. fruslum piece, bit.]
(Geom.) The part of a solid next the base, formed by cutting off the, top; or the part of any solid, as of a cone, pyramid, etc., between two planes, which may be either parallel or inclined to each other.
(Arch.) One of the drums of the shaft of a column.
Douglas Harper's Etymology Dictionary
"remaining piece after a part has been cut off," 1650s, in mathematics, from Latin frustum "piece broken off," from PIE *bhrus-to-, from root *bhreu- "to cut, break up" (see bruise (v.)).
Wiktionary
n. 1 A cone or pyramid whose tip has been truncated by a plane parallel to its base. 2 A portion of a sphere delimited by two parallel planes.
WordNet
n. a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed
[also: frusta (pl)]
Wikipedia
In geometry, a frustum (plural: frusta or frustums) is the portion of a solid (normally a cone or pyramid) that lies between one or two parallel planes cutting it. A right frustum is a parallel truncation of a right pyramid.
The term is commonly used in computer graphics to describe the three-dimensional region which is visible on the screen, the " viewing frustum", which is formed by a clipped pyramid; in particular, frustum culling is a method of hidden surface determination.
In the aerospace industry, frustum is the common term for the fairing between two stages of a multistage rocket (such as the Saturn V), which is shaped like a truncated cone.
Usage examples of "frustum".
I heard that there is to be a frusta at the pillars this very afternoon.
She was again unveiled, the better to watch the frusta, and again I feasted my eyes on her beauty.
I assumed that he was murmurously applauding the performance of the frusta, which, after one last loud and piercing screech, was just then ending.
I did not do that to save myself from the frusta, and I will not do it for both of us.
Some of the enthusiasts seeking to meet me were seeking to meet what they properly considered a Far Journeyer, but a great many wished to meet a man they mistakenly considered Un Grand Romancier, author of an imaginative and entertaining fiction, and others clearly wished only to ogle a Prodigious Liar, as they might have flocked to watch the frusta of some eminent criminal at the piazzetta pillars.