a quantum number that is related to the number of different values of electric charge that a given kind of baryon or meson may have. Symbol: I.
[ahy-sot-uh-pee, ahy-suh-toh-pee] /aɪˈsɒt ə pi, ˈaɪ səˌtoʊ pi/ noun, Chemistry. 1. the quality or condition of being isotopic; isotopic character.
[ahy-soh-tri-tin-oh-in, -oin] /ˌaɪ soʊ trɪˈtɪn oʊ ɪn, -ɔɪn/ noun, Pharmacology. 1. a yellowish-orange to orange crystalline powder, C 20 H 28 O 2 , used in the treatment of cystic acne. /ˌaɪsəʊtrəˈtɪnəʊɪn/ noun 1. a drug related to vitamin A, used to treat severe acne that has failed to respond to other treatment isotretinoin i·so·tret·i·no·in […]
/ˈaɪsəˌtrɒn/ noun 1. (physics) a device for separating small quantities of isotopes by ionizing them and separating the ions by a mass spectrometer
[ahy-suh-trop-ik, -troh-pik] /ˌaɪ səˈtrɒp ɪk, -ˈtroʊ pɪk/ adjective 1. Physics. of equal physical properties along all axes. Compare (def 1). 2. Zoology. lacking axes that are predetermined, as in some eggs. /ˌaɪsəʊˈtrɒpɪk/ adjective 1. having uniform physical properties in all directions 2. (biology) not having predetermined axes: isotropic eggs adj. 1864, from iso- + Greek […]