Hubbry Logo
Glossary of shapes with metaphorical namesGlossary of shapes with metaphorical namesMain
Open search
Glossary of shapes with metaphorical names
Community hub
Glossary of shapes with metaphorical names
logo
8 pages, 0 posts
0 subscribers
Be the first to start a discussion here.
Be the first to start a discussion here.
Glossary of shapes with metaphorical names
Glossary of shapes with metaphorical names
Glossary of shapes with metaphorical names
View on Wikipedia
from Wikipedia

Gaussian curve with a two-dimensional domain

Many shapes have metaphorical names, i.e., their names are metaphors: these shapes are named after a most common object that has it. For example, "U-shape" is a shape that resembles the letter U, a bell-shaped curve has the shape of the vertical cross section of a bell, etc. These terms may variously refer to objects, their cross sections or projections.

Types of shapes

[edit]
Curves
  • Fish bladder
    The Fish bladder is the intersection of two congruent disks, each centered on the perimeter of the other
  • Bicorn
    Bicorn
  • Astroid
    Astroid
  • Tomahawk curve
    Tomahawk curve, with its handle and spike thickened

Some of these names are "classical terms", i.e., words of Latin or Ancient Greek etymology. Others are English language constructs (although the base words may have non-English etymology). In some disciplines, where shapes of subjects in question are a very important consideration, the shape naming may be quite elaborate, see, e.g., the taxonomy of shapes of plant leaves in botany.

Numbers and letters

[edit]
  • A-shape, the shape that resembles the capital letter A
  • B-shape, the shape that resembles the capital letter B
  • C-shape, the shape that resembles the capital letter C
  • D-shape, the shape that resembles the capital letter D
  • Deltoid, the shape that resembles the Greek capital letter Δ
  • E-shape, the shape that resembles the capital letter E
  • F-shape, the shape that resembles the capital letter F
  • Figure 0, the shape that resembles the numeral 0
  • Figure 1, the shape that resembles the numeral 1
  • Figure 2, the shape that resembles the numeral 2
  • Figure 3, the shape that resembles the numeral 3
  • Figure 4, the shape that resembles the numeral 4
  • Figure 5, the shape that resembles the numeral 5
  • Figure 6, the shape that resembles the numeral 6
  • Figure 7, the shape that resembles the numeral 7
  • Figure 8, the shape that resembles the numeral 8
  • Figure 9, the shape that resembles the numeral 9
  • G-shape, the shape that resembles the capital letter G
  • H-shape, the shape that resembles the capital letter H
  • I-shape, the shape that resembles the capital letter Ɪ in a serif font, i.e., with horizontal strokes
  • J-shape, the shape that resembles the capital letter J
  • K-shape, the shape that resembles the capital letter K
  • L-shape, the shape that resembles the capital letter L
  • Lemniscate, the shape that resembles the infinity symbol
  • M-shape, the shape that resembles the capital letter M (interchangeable with the W-shape)
  • N-shape, the shape that resembles the capital letter N (interchangeable with the Z-shape)
  • O-shape, the shape that resembles the capital letter O
  • P-shape, the shape that resembles the capital letter P
    • P-trap, a P-shaped pipe under a sink or basin
  • Pi-shape, the shape that resembles the Greek capital letter Π
  • Q-shape, the shape that resembles the capital letter Q
  • R-shape, the shape that resembles the capital letter R
  • S-shape, the shape that resembles the capital letter S
    • The sigmoid colon, an S-shaped bend in the human intestine
    • S-twist, contrasted with Z-twist for yarn

See also

[edit]

References

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Glossary of shapes with metaphorical names

View on Grokipedia
from Grokipedia
A glossary of shapes with metaphorical names encompasses a collection of geometric figures, particularly plane curves and algebraic varieties, whose nomenclature derives from descriptive metaphors inspired by natural objects, animals, plants, or everyday items, often rooted in Latin or Greek etymology to evoke visual resemblance. These terms, such as cardioid (from Greek kardia, meaning "heart," due to its heart-shaped cusp) and folium (Latin for "leaf," reflecting its looped, foliage-like form), aid in classifying and memorizing complex curves in algebraic geometry. Prominent examples include the , named after the Latin lemniscus for "ribbon" or "pendant," describing its figure-eight loop that resembles tied decorative bands; the cissoid of Diocles, from Greek kissos meaning "ivy," for its vine-like cusp; and the cochleoid, derived from Latin cochlea ("snail"), evoking a spiraling shell. Such metaphorical naming conventions emerged historically in the study of conic sections and higher-degree curves, with early contributions from mathematicians like Diocles (c. 180 BCE) and later systematized in classifications by figures such as in his 1704 enumeration of cubics. This glossary extends beyond classical conics—like the parabola (from Greek parabolē, meaning "comparison" or "application" in geometry, its parabolic arc resembling the path of a thrown object)—to include modern discoveries such as the astroid (from Greek aster, "star," for its four-pointed stellar cusps) and bicorn (Latin for "two-horned," due to its twin peaks). These shapes appear in diverse applications, from optics and engineering to computer graphics, where their intuitive names enhance descriptive precision without relying solely on equations.

Natural Metaphors

Plant and Fruit Shapes

Plant and fruit shapes draw from the organic contours of botanical forms, characterized by smooth curves, asymmetries, and growth-inspired proportions that evoke natural vitality and asymmetry. These metaphorical shapes often feature rounded or tapered profiles mimicking the development of fruits and foliage, influencing fields from mathematics and statistics to architecture and decorative arts. Unlike rigid geometric forms, they emphasize fluidity and irregularity derived from biological structures, providing a basis for both functional and aesthetic designs. The apple-shaped form is a rounded, near-spherical with a subtle taper or at the stem end, reflecting the fruit's natural morphology where growth hormones concentrate to create the characteristic indentation. This shape arises from differential cell expansion in the apple's developing pericarp, resulting in a compact, bulbous profile ideal for rolling and storage. In applications, apple-shaped elements appear in product , such as ergonomic handles or decorative motifs, where the gentle promotes intuitive handling and visual appeal. Pear-shaped describes a wider at the base and narrowing toward the top, directly inspired by the pyriform contour of the , where the lower calyx end bulges due to seed clustering and the upper pedicel tapers. The term entered fashion lexicon in the early to characterize fuller lower-body proportions, as observed in European descriptions of diverse physiques, including those exhibited in public spectacles like the case of Saartjie Baartman, whose form was likened to the 's inverted teardrop profile. This shape's ties to Victorian-era tailoring, where it denoted garments accentuating hip width against a slimmer upper frame, influencing definitions in apparel . In broader design, it informs vessel forms and jewelry pendants, balancing stability with elegance through the weighted base. Bell-shaped refers to a flared, concave profile widening from a narrow to a broad, open rim, analogous to the corolla of flowers like foxgloves or lily-of-the-valley, where petals expand to attract pollinators. Mathematically, it approximates the Gaussian distribution, a with the equation f(x)=1σ2πe−(x−μ)22σ2f(x) = \frac{1}{\sigma \sqrt{2\pi}} e^{-\frac{(x-\mu)^2}{2\sigma^2}}
Add your contribution
Related Hubs
User Avatar
No comments yet.