: an ancient massive structure found especially in Egypt having typically a square ground plan, outside walls in the form of four triangles that meet in a point at the top, and inner sepulchral chambers
b
: a structure or object of similar form
2
: a polyhedron having for its base a polygon and for faces triangles with a common vertex see Volume Formulas Table
3
: a crystalline form each face of which intersects the vertical axis and either two lateral axes or in the tetragonal system one lateral axis
4
: an anatomical structure resembling a pyramid: such as
a
: any of the conical masses that project from the renal medulla into the renal pelvis
b
: either of two large bundles of motor fibers from the cerebral cortex that reach the medulla oblongata and are continuous with the pyramidal tracts of the spinal cord
5
: an immaterial structure built on a broad supporting base and narrowing gradually to an apex
: to arrange or build up as if on the base of a pyramid
2
: to use (something, such as profits) in speculative pyramiding
3
: to increase the impact of (something, such as a tax assessed at the production level) on the ultimate consumer by treating as a cost subject to markup
Examples of pyramid in a Sentence
Noun
the ancient pyramids of Egypt
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Noun
Perhaps the pinnacle of the institutional investor pyramid is the sovereign wealth fund.—Philip Maymin, Forbes, 5 Mar. 2025 For instance, at the Mayan pyramid of Chichén Itzá in Mexico, the setting sun casts a shadow that resembles a serpent slithering down the pyramid’s steps—an event that drew crowds even in ancient times.—Matt Rozo, The Mercury News, 3 Mar. 2025 As the evening wore on, a pyramid of tennis balls branded with the WTA’s new logo cast long shadows in the twilight.—Nick Remsen, Vogue, 1 Mar. 2025 One of my favorite vacations of all time, there’s nothing quite like seeing the ancient pyramids and pharaohs’ tombs in the Valley of the Kings in person.—Hannah Freedman, Travel + Leisure, 17 Feb. 2025 See All Example Sentences for pyramid
: either of two large bundles of motor fibers from the cerebral cortex that reach the medulla oblongata and are continuous with the corticospinal tracts of the spinal cord
c
: a conical projection making up the central part of the inferior vermis of the cerebellum
: a group of holding companies superimposed on one another to give those in control of the top holding company control over all of the companies with a small investment
2
: the series of operations involved in pyramiding on an exchange
3
: a pyramid scheme
pyramid
2 of 3intransitive verb
: to speculate (as on a security or commodity exchange) by using paper profits as a margin for additional transactions
: to increase the impact of (as a tax assessed at the production level) on the ultimate consumer by treating as a cost subject to markup
pyramid
3 of 3adjective
: of, relating to, or being an illegal scheme in which participants give money or other valuables in exchange for the opportunity to receive payment for recruiting others to participate in the scheme
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