[ahy-suh-ster-ik] /ˌaɪ səˈstɛr ɪk/
Chemistry. having the same number of valence electrons in the same configuration but differing in the kinds and numbers of atoms.
Meteorology. having or showing equal atmospheric density.
(of two different molecules) having the same number of atoms and the same number and configuration of valency electrons, as carbon dioxide and nitrous oxide
[ahy-suh-steer] /ˈaɪ səˌstɪər/ noun 1. Chemistry. a compound isosteric with one or more other compounds. 2. Meteorology. a line on a map or chart connecting points of equal atmospheric density.
[ahy-sos-tuh-riz-uh m] /aɪˈsɒs təˌrɪz əm/ noun 1. Chemistry. the quality or state of being isosteric. 2. Pharmacology. the theory that isosteric compounds have identical or similar pharmacological action.
isosthenuria i·sos·the·nu·ri·a (ī-sŏs’thə-nur’ē-ə, ī’sō-sthě-) n. A condition in chronic renal disease in which the kidneys cannot form urine with a higher or a lower specific gravity than that of protein-free plasma.
[ahy-suh-struhk-cher-uh l] /ˌaɪ səˈstrʌk tʃər əl/ adjective, Crystallography. 1. (of two substances) having the same crystal structure but not necessarily a similar chemical composition.