| haversine |
|
noun-
(trigonometry) The haversed sine.
|
|
| Heaviside unit function |
|
noun-
(mathematics) The function whose value is zero if its independent variable is negative, and one otherwise
|
| helical |
|
adjective- in the shape of a helix
|
| helices |
|
noun
-
(plural of, helix)
|
| helix |
|
noun (helixes, pl2=helices)
-
(mathematics) A curve on the surface of a cylinder or cone such that its angle to a plane perpendicular to the axis is constant; the three-dimensional curve seen in a screw or a spiral staircase.
-
(architecture) A small volute under the abacus of a Corinthian capital.
-
(anatomy) The incurved rim of the external ear.
proper nounHelix
-
(zoology) A genus of land snail containing many species.
|
| hemisphere |
|
noun
-
(geometry) A half-sphere, formed by a plane intersecting the center of a sphere.
-
(geography) Half of the Earth, the Northern Hemisphere, Southern Hemisphere, Western Hemisphere or Eastern Hemisphere.
-
(anatomy) Either of the two halves of the cerebrum.
|
| hendecagon |
|
noun (pluralhendecagons)
-
(geometry) A polygon with eleven sides and eleven angles.
|
| heptad |
|
noun
- a group of seven things
|
| heptagon |
|
noun (plural:heptagons)
-
(geometry) A polygon with seven sides and seven angles.
|
| heptagonal |
|
adjective
- Having seven angles and sides.
|
| heptahedron |
|
noun (plural=heptahedra or heptahedrons)
-
(mathematics) any polyhedron having seven faces
|
| hex |
|
noun (hexes)
- An evil spell or curse.
- A witch.
verb (hexes, hexing, hexed)
- To put a hex on.
|
| hexad |
|
noun
- A group of six.
|
| hexagon |
|
noun
-
(geometry) A polygon with six sides and six angles.
|
| hexagonal |
|
adjective-
(geometry) Having six edges, or having a cross-section in the form of a hexagon.
-
Nuts in engineering are generally hexagonal.
-
(crystallography) Having three equal axis which cross at 60° angles, and an unequal axis which crosses the others at 90° angle.
|
| hexagram |
|
noun
- A hollow six-pointed star formed by overlapping two equilateral triangles; the Star of David.
- Any of the 64 sets of solid and broken lines used for divination in the I Ching.
- A large silver coin minted during the Byzantine, Byzantine Empire.
|
| hexahedron |
|
noun (pl2=hexahedra)
-
(geometry) A polyhedron with six faces; the regular hexahedron is more commonly called the cube and is one of the Platonic solids.
|
| Hilbert space |
|
noun
-
(mathematics) A generalized Euclidean space in which mathematical functions take the place of points; crucial to the understanding of quantum mechanics and other applications.
|
| homothetic |
|
adjective
-
(mathematics) of a function of two or more variables in which the ratio of the partial derivatives depends only on the ratio of the variables, not their value
-
(economics) in which the ratio of goods demanded depends only on the ratio of their prices
- the relationship of a microcosm to a macrocosm
|
| hundred |
|
noun (pluralhundreds)
- A hundred-dollar bill.
-
(historical) An administrative subdivision in southern English counties and other countries.
-
(cricket) a hundred runs scored by a batsman
- He made a in the historic match.
|
| hundredth |
|
noun
- The person or thing in the hundredth position.
- One of a hundred equal parts of a whole. Called also percent.
adjective
- The ordinal form of the number hundred, one hundred.
|
| hyperbolic function |
|
noun
-
(mathematics) A function that is derived from some arithmetic operations on the exponential function with base e and the inverse function, and was named after the corresponding similar trigonometric function.
|
| hypergeometric distribution |
|
noun
-
(probability theory) A discrete probability distribution that describes the number of successes in a sequence of n draws from a finite population without replacement.
|
| hypergeometric function |
|
noun-
(mathematics) Any function that is a solution of the hypergeometric equation; usually an expansion of an infinite series
|
| hyperspace |
|
noun
-
(math) An n-dimensional Euclidian space with n > 3.
-
(math) A Euclidian space of unspecified dimension.
-
(scifi) A notional space orthogonal to the usual dimensions of space-time often used for faster-than-light travel.
We can only get to the Nimrodian Galaxy if we go through .
-
(Video games): A means of teleporting one's character.
I was totally surrounded, so I had to hit .
|
| hypersphere |
|
noun
-
(geometry) The set of all points in a given hyperspace that are at a given distance from a given point.
|
| hypersurface |
|
noun-
(mathematics) A -dimensional surface in a space (often a Euclidean space) of dimension +1
|
| hypocycloid |
|
noun (pluralhypocycloids)
-
(geometry) The locus of a point on the circumference of a circle that rolls without slipping inside the circumference of another circle.
|
| hypotenuse |
|
noun
-
(geometry) The side of a right triangle opposite the right angle.
|
