toroidal, cryostat, josephson junction, resonant cavity, magnetisation, dipole moment, soliton, dipolar, resonator, cuvette, icosahedral, magnetic dipole, magnetic flux, microchannel, rheometer, diffraction grating, quasicrystal, ferromagnetism, plasmon, dopant, ferrite, torus, strange quark, biomolecule, ellipsoid, exciton, micelle, dispersive, isotherms, enthalpy, semiconducting material, corrugation, remanent, paramagnetic, macromolecule, piezoelectric crystal, tetrahedron, manganite, lamella, bolometer, magnetization, photocurrent, boron nitride, crystal lattice, cementite, crystal oscillator, cadmium sulfide, nucleons, supramolecular, bilayer, martensite, electric dipole, stilbene, retroreflector, photolithographic, waveguide, corona discharge, valence electron, volute, submicron, capillary tube, filament, scintillator, electromagnet, carbides, zener diode, quasiparticle, baseplate, electromotive force, variable resistor, spicule, acoustic impedance, anneal, microbalance, orbitals, photodetector, bimetal, phototransistor, diffracting, covalent bond, magnetoresistance, supersolid, photoconductive, inductances, alkane, valence electrons, hysteresis loop, alkali metal, crystallites, adiabatic, triode, monochromator, photoluminescence, voltage divider, chromophore, dephasing, silicide, porphyrin, gelation, chalcogenide, agarose, dipole antenna, coil, solenoid, casing, cylinder, ellipse, rectangle, vane, armature, cage, helix, horseshoe, inductor, loop, parallelogram, plunger, rotor, shell, cantilever

anchor ring, annulus, anulus, doughnut, halo, ring

toroidal

round shape, solid

torus