# All Words Glossary

 Glossary of Math Terms beginning with letter H Browse the Math Glossary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 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 noun Helix (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 (plural hendecagons) (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 60Â° angles, and an unequal axis which crosses the others at 90Â° 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 (plural hundreds) 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 (plural hypocycloids) (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.

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