Phrase Hound found 29 phrases and 11 compound words that contain radius. The most common are listed below. Open radius in the live search for definitions, filters, and the full list.
Phrases 29
- radius of convergencefor a power series ∑ₙ₌₀ ᪲c_n(z-a)ⁿ, the unique number R=[0,∞] such that the sum is convergent for |z-a|R
- radius of actionmaximum distance a ship, vehicle, etc. can travel away from its base without refueling
- radius of curvatureThe radius of the osculating circle at the point on the curve
- radius of gyrationGiven a body B, the distance from a given axis of rotation at which a point mass of the same mass as B would have the same moment of inertia about said axis.
- atomic radiusThe distance from the center of the nucleus to the outermost electron in an atom.
- hydraulic radiusFor a porous material, the ratio of porosity (ratio of volume of interstitial space filled with fluid to volume of material) to specific surface area (ratio of surface area in contact with fluid to volume of material); for a pipe or …
- radius armA radius rod.
- radius vectorOf a point, a vector going from the origin to that point; equivalently, the transpose of the point.
- Schwarzschild radiusThe radius of an object such that, if all its mass were compressed within that radius, the escape velocity would equal the speed of light.
- blast radiusThe area affected by an explosion.
- Earth radiusThe distance from the center of Earth to a point on or near its surface.
- Hill radiusSynonym of Hill sphere: The region in which a given astronomical body dominates the attraction of satellites.
- radius rodSynonym of radius bar: In a steam engine, a rod pivoted at one end and connected at the other with a concentrically moving part at a fixed distance.
- potato radiusThe radius of a celestial body when it is long enough to allow gravity to transform the body into a globe, typically estimated at approximately 300 kilometres.
- metallic radiusHalf of the distance between two adjacent metal ions in a metallic structure.
- covalent radiusThe measure of an atom forming a covalent bond.
- Bohr radiusA physical constant, the approximate distance between the proton and electron of a hydrogen atom in its ground state, equal to about 53 picometers.
- Einstein radiusThe characteristic angular radius of an Einstein ring formed during gravitational lensing, representing the typical scale over which light from a background source is deflected by by a foreground massive object.
- Roche radiusSynonym of Roche limit: The closest a satellite can approach its parent body before the gravitational forces holding it together are overwhelmed by tidal forces pulling it apart.
- ionic radiusThe measure of a monatomic ion in the structure of an ionic crystal.
- distal radiusThe part of the radius (the forearm bone on the thumb side) that is closest to the wrist, forming key wrist joint surfaces; a common site for fractures (broken wrists) from falls, involving structures like ligaments and the joint capsule …
- Debye radiusSynonym of Debye length: In plasmas and electrolytes, a measure of a charge carrier's net electrostatic effect in a solution and how far that effect persists.
- van der Waals radiusThe radius of an imaginary hard sphere representing the distance of closest approach from one atom to another.
- radius armsplural of radius arm: A radius rod.
- radius barIn a steam engine, a rod pivoted at one end and connected at the other with a concentrically moving part at a fixed distance.
Compound words 11
- irradiateMade brilliant or bright; irradiated, illuminated.
- gyradiusRadius of gyration.
- equiradiatehaving equal-length radii
- exradiusThe radius of an excircle.
- gyroradiusThe radius of the circular motion of a charged particle in the presence of a uniform magnetic field.
- hyperradiusThe radius of a hypersphere
- interradiusAny interradial part, but especially the radius of a coelenterate halfway between two perradii
- diradiationThe emission and diffusion of rays of light.
- circumradiusFor a given geometric shape, the radius of the smallest circle or sphere into which it will fit.
- perradiusAny of the primary rays of a medusa