Phrase Hound found 16 phrases and 5 compound words that contain radii. The most common are listed below. Open radii in the live search for definitions, filters, and the full list.
Phrases 16
- atomic radiiplural of atomic radius: The distance from the center of the nucleus to the outermost electron in an atom.
- ionic radiiplural of ionic radius: The measure of a monatomic ion in the structure of an ionic crystal.
- covalent radiiplural of covalent radius: The measure of an atom forming a covalent bond.
- Hill radiiplural of Hill radius: The region in which a given astronomical body dominates the attraction of satellites.
- hydraulic radiiplural of hydraulic radius: For 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 …
- metallic radiiplural of metallic radius: Half of the distance between two adjacent metal ions in a metallic structure.
- potato radiiplural of potato radius: The 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.
- Roche radiiplural of Roche radius: The closest a satellite can approach its parent body before the gravitational forces holding it together are overwhelmed by tidal forces pulling it apart.
- sight radiiplural of sight radius: The distance between the front and rear sights of a firearm.
- Bohr radiiplural of Bohr radius: A physical constant, the approximate distance between the proton and electron of a hydrogen atom in its ground state, equal to about 53 picometers.
- radii of convergenceplural of radius of convergence: for 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
- radii of curvatureplural of radius of curvature: The radius of the osculating circle at the point on the curve
- Schwarzschild radiiplural of Schwarzschild radius: The radius of an object such that, if all its mass were compressed within that radius, the escape velocity would equal the speed of light.
- Debye radiiplural of Debye radius: In plasmas and electrolytes, a measure of a charge carrier's net electrostatic effect in a solution and how far that effect persists.
- radii of gyrationplural of radius of gyration: Given 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.
- radii vectoresplural of radius vector: Of a point, a vector going from the origin to that point; equivalently, the transpose of the point.
Compound words 5
- circumradiiplural of circumradius: For a given geometric shape, the radius of the smallest circle or sphere into which it will fit.
- gyroradiiplural of gyroradius: The radius of the circular motion of a charged particle in the presence of a uniform magnetic field.
- interradiiplural of interradius: Any interradial part, but especially the radius of a coelenterate halfway between two perradii
- perradiiplural of perradius: Any of the primary rays of a medusa
- triradiiplural of triradius: A group of three ridges forming a Y shape at the base of each finger on the palm of the hand.