“Iso-” is a handy prefix that means “the same” or “equal” (from the Greek “isos”). The following terms all take advantage of this Greek route.
| Iso-Term |
Meaning |
| Isobar |
Equal change in air pressure |
| Isobathytherm |
Equal depth in water having the same temperature |
| Isobront |
Equal amount of thunder |
| Isoceraunic |
Equal number of thunder storm events |
| Isochasm |
Equal frequency of observing the Aurora Borealis |
| Isochrone |
Equal time for the same occurrence of an event |
| Isodrosotherm |
Equal dew point temperature |
| Isogon |
Equal wind direction |
| Isohel |
Equal sunshine |
| Isohume |
Equal humidity |
| Isohyet |
Equal rainfall |
| Isokeraun |
Equally intense thunderstorms |
| Isometrics |
Equal lines of elevation |
| Isoneph |
Equal cloud cover |
| Isonif |
Equal snowfall |
| Isopectic |
Places where winter frosts and ice form at the same time of year |
| Isopleth |
Any equal line of something |
| Isopycnal |
Equal air density |
| Isoryme |
Equal incidence of frost |
| Isotach |
Equal wind speed |
| Isothere |
Places where average summer temperatures are the same |
| Isotherm |
Equal air temperature |
