oval
An elongated round shape resembling an egg or ellipse.
A thing having such a shape, such as an arena.
A sports field, typically but not exclusively oval in shape.
In a projective plane, a set of points such that no three are collinear and there is a unique tangent line at each point.

ovalescent
Approaching an oval shape.

ovaline
Synonym of oval: having an elongated round shape.

ovalish
Approximately oval-shaped.

ovallike
Resembling or characteristic of an oval.

ovalling
distortion into an oval shape

ovaloid
Approximately oval.

ovals
plural of oval

ovicellate
Having oval cells

ovocylindrical
cylindrical but with an oval rather than circular cross section

ovoid
Shaped like an oval.
Egg-shaped; shaped like an oval, but more tapered at one end; ovate.

ovoids
plural of ovoid

ovular
Of or pertaining to an ovule.
Oval.

ovulars
plural of ovular

pandiagonal
Of a magic square: having the additional property that the broken diagonals, i.e. the diagonals that wrap round at the edges of the square, also add up to the magic constant.

pantoporate
Having six or more round holes arranged around the surface.

peltiform
shield-like, with the outline nearly circular; peltate

perfoliate
Appearing to have the stem passing through the blade.
Having the leaf round the stem at the base.
Surrounded by a circle of hairs, etc.

perispherical
Exactly spherical; globular.

photoswitch
A switch that is activated by light
A compound whose structure is changed, and whose function is activated by light

platterlike
Having the form of a platter (flat and round)

pollicate
To gesture with the thumb.

pomey
Alternative form of pommee.

pomeys
plural of pomey

pommee
Having the ends terminating in rounded protuberances or single balls; having round shapes on the extremities.

pommees
plural of pommee

postround
Occurring after a round, such as in boxing or golf

precurved
curved prior to usage

preround
Before a round of golf.

procurved
curved forward

proverse
Describing the tendency of a plane to roll in the same direction as yaw.
Favourable; in line with one's interests or desires.
In the typical or canonical direction, order, or orientation.
Curved backward or downward.
Narrower at the top.

pulvinate
Curved convexly or swelled.
Having the form of a cushion, or used to cushion/provide padding.

quasicircular
Almost, but not quite circular.

quasispherical
Having some spherical characteristics

quilllike
Rolled or curved into a narrow, tubelike shape.

radiused
Having a specified type of radius.
Having a rounded or curved edge.

recurved
simple past and past participle of recurve

reniform
Synonym of kidney-shaped (“having an approximately circular or elongated ovoid shape with an inward curve or indentation on one side”).
Synonym of kidney-shaped (“having an approximately circular or elongated ovoid shape with an inward curve or indentation on one side”).

repand
Having a slightly undulating margin.
Bent or curved backward or upward.

retrocurved
curved backward

retroflex
Bent or curved backwards.
Of pronunciation in which the tip of the tongue is raised and bent backwards, so that the underside of the tongue approaches or touches the palate.
Of pronunciation in which the tip of the tongue approaches or touches the back of the alveolar ridge.
Of pronunciation in which the blade of the tongue approaches or touches the back of the alveolar ridge.
Of any of the aforementioned pronunciations.

retrorse
Curved, pointed or oriented backward or downward.

ringhead
The top of a ring-shaped construction.
An instrument used for stretching woollen cloth.
A cutting tool or assembly that consists of a circular head which houses multiple cutting knives or blades arranged in a ring formation.
A journalist who covers Olympic sports.
A warrior of the Zulu or Amaswazi tribe.

ringlike
Like a ring; round or nearly so.

ringtailed
Alternative form of ring-tailed.

rotund
Having a round, spherical or curved shape; circular; orbicular.
Having a round body shape; portly or pudgy; obese.
Full and rich; orotund; sonorous; full-toned.

rotunder
comparative form of rotund: more rotund

rotundest
superlative form of rotund: most rotund

rotundifolious
Having round leaves.

roundback
Kyphosis.
A kind of mandolin having a rounded back.

roundbacks
plural of roundback

roundheaded
Having a round head or top.

roundish
Somewhat round.

roundleaf
Having round leaves.

rupioid
Having well-defined, grossly cone-shaped, circular, thick keratotic lesions shaped like oyster shells or barnacles.

scround
Alternative form of sqround.

scrounds
plural of scround

semiamplexicaul
Partially amplexicaul; embracing the stem half or partly round.

semiannular
Having a shape resembling part of a ring or incomplete circular band.

semicolumnar
Like a semicolumn; flat on one side and round on the other; imperfectly columnar.

semicylindrical
Having the shape of a semicylinder.
Of a leaf: elongated, flat on one side and round on the other.

semielliptic
Synonym of semielliptical.
In the theory of partial differential equations, designating a partial differential operator satisfying a positivity condition slightly weaker than that of being an elliptic operator. This produces a curved line progressively slightly straighter than an ellipse, such as that of an automotive leaf spring.

semioval
Half oval.

semiovals
plural of semioval

semitangent
The tangent of half an arc.

spatulous
Resembling a spatula in shape; having a round, flat tip.

spheral
spherical
spherically symmetric

sphericocylindrical
Of a lens: having a hemispherical end and a cylindrical end.

spheriform
spherical in shape

spheroidal
Like a spheroid; roughly spherical.

spheroidals
plural of spheroidal

sqround
Shaped like a rectangular prism, but with a round top; (commonly said of bottles).

sqrounds
plural of sqround

squircular
Of the shape of a squircle, intermediate between a square and a circle.
Combining circular and square shapes.

squoval
square oval

squround
Alternative form of sqround.

squrounds
plural of squround

subarcuate
Having a figure resembling that of a bow; somewhat curved or arched.

subcircular
Nearly circular; approaching a circular form.

subcultrate
Having a form resembling that of a coulter, or straight on one side and curved on the other.

subcylindric
Imperfectly cylindrical; only approximately cylindrical.

subcylindrical
Imperfectly cylindrical; only approximately cylindrical.

suboval
Somewhat or nearly oval.

subplocoid
With circular and touching corallite walls.

subprolate
Slightly prolate (but approximately spherical)

subround
Not perfectly round in shape; subrounded.

subrounds
plural of subround

subspherical
Somewhat spherical; having a figure resembling that of a sphere.

subswitch
A simpler switch that is a component of a more complex switch, used in telephone exchanges or data routing.

superdeformed
Very far from spherical, forming an ellipsoid with axes in ratios of approximately 2:1:1 (as opposed to the norm of approximately 1.3:1:1).

supraequatorial
Above the equator of a spherical or rounded anatomical structure.

swirled
Mixed in a circular pattern with both original components distinguishable.