| Word | Definitions | Synonyms |
|---|---|---|
| isobar | (noun) (meteorology)an isogram connecting points having equal barometric pressure at a given time | - |
| isobase | (noun) a line drawn on a map or chart connecting places of equal or constant land upheaval. | - |
| isobront | (noun) a line drawn through geographical points at which a given phase of thunderstorm activity occurred simultaneously. | - |
| isobutylene | (noun) used also in making gasoline components | - |