a. [ Gr. 'a priv. + dia` through + &unr_;heat. ] Not pervious to heat. [ 1913 Webster ]

n. [ See Athermanous. ] Inability to transmit radiant heat; impermeability to heat. Tyndall. [ 1913 Webster ]

a. [ Gr. 'a priv. + qermai`nein to heat, qe`rma heat: cf. F. athermane. ] (Chem.) Not transmitting heat; -- opposed to diathermanous. [ 1913 Webster ]

a. (Chem.) Athermanous. [ 1913 Webster ]

n. [ Gr. &unr_; weight + thermograph. ] An instrument for recording both pressure and temperature, as of the atmosphere. [ Webster 1913 Suppl. ]

a. [ Gr. &unr_; thoroughly warm; dia` through + &unr_; warm, hot. Cf. Diathermous. ] Freely permeable by radiant heat.

{ } n. [ See Diathermanous. ] The property of transmitting radiant heat; the quality of being diathermous. Melloni. [ 1913 Webster ]

n. The doctrine or the phenomena of the transmission of radiant heat. Nichol. [ 1913 Webster ]

a. [ Gr. &unr_; to warm through; dia` through + &unr_; to warm, &unr_; warm. ] Having the property of transmitting radiant heat; diathermal; -- opposed to athermanous. [ 1913 Webster ]

a. Affording a free passage to heat; as, diathermic substances. Melloni. [ 1913 Webster ]

n. [ Gr. &unr_; warm + -meter. See Diathermal. ] (Physics) An instrument for examining the thermal resistance or heat-conducting power of liquids. [ 1913 Webster ]

a. Same as Diathermal. [ 1913 Webster ]

n. That branch of electrical science which treats of the effect of an electric current upon the temperature of a conductor, or a part of a circuit composed of two different metals. [ 1913 Webster ]

a. [ Pref. endo- + thermic. ] (Chem.) Designating, or pert. to, a reaction which occurs with absorption of heat; formed by such a reaction; as, an endothermic substance; -- opposed to exothermic. [ Webster 1913 Suppl. ]

a. [ Pref. exo- + thermic. ] (Chem.) Characterized by, or formed with, evolution of heat; as, an exothermic reaction; -- opposed to endothermic. [ Webster 1913 Suppl. ]

adv. [ Obs. ] See Furthermore. [ 1913 Webster ]

a. Most remote; farthest. [ 1913 Webster ]

adv. or conj. Moreover; besides; in addition to what has been said. [ 1913 Webster ]

a. Most remote; furthest. [ 1913 Webster ]

n. [ Gr. ge`a, gh^, the earth + E. thermometer. ] (Physics) A thermometer specially constructed for measuring temperetures at a depth below the surface of the ground. [ 1913 Webster ]

‖n. pl. (Zool.) Same as Hematotherma. [ 1913 Webster ]

a. Warm-blooded; homoiothermal. [ 1913 Webster ]

n. [ Gr. a"i^ma blood + &unr_; warm.] (Zool.) A warm-blooded animal. [R.] [1913 Webster]

a. (Zool.) Warm-blooded; hematothermal. [ R ] [ 1913 Webster ]

‖n. pl. [ NL., from Gr. a"i^ma, a"i`matos, blood + thermo`s warm. ] (Zool.) The warm-blooded vertebrates, comprising the mammals and birds; -- the antithesis to hematocrya. [ 1913 Webster ]

a. Warm-blooded. [ 1913 Webster ]

a. Nearest on this side. Sir M. Hale. [ 1913 Webster ]

n. (Biol.) A homoiothermal animal.
Syn. -- homoiotherm. [ PJC ]

adj. (Biol.) having constant and relatively high body temperature; warm-blooded; same as homoiothermal; -- of birds and mammals. Contrasted to poikilothermal.
Syn. -- homoiothermic, homoiothermal, homothermic, homothermal. [ WordNet 1.5 ]

n. (Biol.) The process or state of being homoiothermal.
Syn. -- homoiothermism, homoiothermy. [ PJC ]

a. See Homoiothermal. [ 1913 Webster ]

n. (Biol.) A homoiothermal animal.
Syn. -- homeotherm. [ PJC ]

a. [ Gr. &unr_; like + E. thermal. ] (Physiol.) Maintaining a uniform body temperature, usually above the ambient temperature; hæmatothermal; homothermic; warm-blooded; -- applied to warm-bodied animals such as birds and mammals, because they maintain a nearly uniform temperature in spite of the great variations in the surrounding air; in distinct from the cold-blooded (poikilothermal) animals, whose body temperature follows the variations in temperature of the surrounding medium.
Syn. -- homeothermal, homeothermic, homothermal, homothermic, homoiothermic. [ 1913 Webster ]

n. (Biol.) The process or state of being homoiothermal.
Syn. -- homeothermism, homeothermy. [ PJC ]

{ } a. [ Homo- + Gr. &unr_; heat. ] (Physiol.) Warm-blooded; homoiothermal; hæmatothermal. [ 1913 Webster ]

a. [ Hydro-, 1 + thermal. ] 1. Of or pertaining to hot water; -- used esp. with reference to the action of heated waters in dissolving, redepositing, and otherwise producing mineral changes within the crust of the globe. [ 1913 Webster ]

2. of, pertaining to, or using the hot waters or steam found at special locations within the earth's crust; as, hydrothermal power generation. [ PJC ]

n. abnormally high body temperature.
Syn. -- hyperthermy. [ WordNet 1.5 ]

a. [ Idio- + thermic. ] Self-heating; warmed, as the body of animal, by process going on within itself.

n. [ Iso- + Gr. &unr_; deep + &unr_; heat. ] (Phys. Geog.) A line connecting the points on the surface of the earth where a certain temperature is found at the same depth. [ 1913 Webster ]

a. Of or pertaining to an isobathytherm; possessing or indicating the same temperature at the same depth. [ 1913 Webster ]

n. [ Iso- + Gr. gh^ the earth + qe`rmh heat. ] (Phys. Geog.) A line or curved surface passing beneath the earth's surface through points having the same mean temperature.

{ } a. Pertaining to, having the nature of, or marking, isogeotherms; as, an isogeothermal line or surface; as isogeothermal chart. -- n. An isogeotherm. [ 1913 Webster ]

n. [ Iso- + Gr. &unr_; heat, fr. &unr_; hot. ] 1. (Phys. Geog.) 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. [ 1913 Webster ]

2. (Physics) A line on a graph connecting points representing states having the same temperature; an isothermal line. [ PJC ]

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 ]

n. [ Iso- + Gr. &unr_; hot + &unr_; depth. ] (Phys. Geog) A line drawn through points of equal temperature in a vertical section of the ocean. [ 1913 Webster ]

a. Of or pertaining to an isothermobath; possessing or indicating equal temperatures in a vertical section, as of the ocean. [ 1913 Webster ]

n. a dish of lobster meat cooked with a rich creamy wine sauce, stuffed back into the lobster shell, sprinkled with grated cheese, and browned. [ PJC ]

a. Lower, nether. [ Obs. ] Holland. [ 1913 Webster ]

a. [ AS. niðemest. See Nether, and cf. Aftermost. ] Lowest; as, the nethermost abyss. Milton. [ 1913 Webster ]

n. (Med., Physiol.) normal body temperature. [ WordNet 1.5 ]