Isothermal zones
Isothermal I`so*ther"mal, a. [Cf. F. isotherme.] (a) Relating to equality of temperature, or an isotherm. (b) (Phys. Geog.) Having reference to the geographical distribution of temperature, as exhibited by means of isotherms; as, an isothermal line; an isothermal chart. [1913 Webster]

{Isothermal line}. (a) An isotherm. (b) A line drawn on a diagram of energy such that its ordinates represent the pressures of a substance corresponding to various volumes, while the absolute temperature is maintained at a constant value.

{Isothermal zones}, spaces on opposite sides of the equator having the same mean temperature, and bounded by corresponding isothermal lines. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • Isothermal — I so*ther mal, a. [Cf. F. isotherme.] (a) Relating to equality of temperature, or an isotherm. (b) (Phys. Geog.) Having reference to the geographical distribution of temperature, as exhibited by means of isotherms; as, an isothermal line; an… …   The Collaborative International Dictionary of English

  • Isothermal line — Isothermal I so*ther mal, a. [Cf. F. isotherme.] (a) Relating to equality of temperature, or an isotherm. (b) (Phys. Geog.) Having reference to the geographical distribution of temperature, as exhibited by means of isotherms; as, an isothermal… …   The Collaborative International Dictionary of English

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