SG Heritage Dictionary

Isotherm [Noun] Webster's Dictionary 1913

A line connecting or marking points on the earth's surface having the same temperature. This may be the temperature for a given time of observation, or the mean temperature for a year or other period. Also, a similar line based on the distribution of temperature in the ocean.

Isothermal [Adjective] Webster's Dictionary 1828

Having an equal degree of heat, or a like temperature.

Isothermal [Adjective] Webster's Dictionary 1913

1. Relating to equality of temperature.

2. Having reference to the geographical distribution of temperature, as exhibited by means of isotherms; as, an isothermal line; an isothermal chart.

Isothermobath [Noun] Webster's Dictionary 1913

A line drawn through points of equal temperature in a vertical section of the ocean.

Isothermobathic [Adjective] Webster's Dictionary 1913

Of or pertaining to an isothermobath; possessing or indicating equal temperatures in a vertical section, as of the ocean.

Isotherms Encyclopedia Britannica

ISOTHERMS. See Meteorology.

9th ed. Encyclopædia Britannica, vol. 13, p. 393
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