Source : Webster's Revised Unabridged Dictionary (1913)

Blood \Blood\, n. [OE. blod, blood, AS. bl?d; akin to D. bloed,
   OHG. bluot, G. blut, Goth, bl??, Sw. & Dan. blod; prob. fr.
   the same root as E. blow to bloom. See {Blow} to bloom.]
   1. The fluid which circulates in the principal vascular
      system of animals, carrying nourishment to all parts of
      the body, and bringing away waste products to be excreted.
      See under {Arterial}.

   Note: The blood consists of a liquid, the plasma, containing
         minute particles, the blood corpuscles. In the
         invertebrate animals it is usually nearly colorless,
         and contains only one kind of corpuscles; but in all
         vertebrates, except Amphioxus, it contains some
         colorless corpuscles, with many more which are red and
         give the blood its uniformly red color. See
         {Corpuscle}, {Plasma}.

   2. Relationship by descent from a common ancestor;
      consanguinity; kinship.

            To share the blood of Saxon royalty.  --Sir W.
                                                  Scott.

            A friend of our own blood.            --Waller.

   {Half blood} (Law), relationship through only one parent.

   {Whole blood}, relationship through both father and mother.
      In American Law, blood includes both half blood, and whole
      blood. --Bouvier. --Peters.

   3. Descent; lineage; especially, honorable birth; the highest
      royal lineage.

            Give us a prince of blood, a son of Priam. --Shak.

            I am a gentleman of blood and breeding. --Shak.

   4. (Stock Breeding) Descent from parents of recognized breed;
      excellence or purity of breed.

   Note: In stock breeding half blood is descent showing one
         half only of pure breed. Blue blood, full blood, or
         warm blood, is the same as blood.

   5. The fleshy nature of man.

            Nor gives it satisfaction to our blood. --Shak.

   6. The shedding of blood; the taking of life, murder;
      manslaughter; destruction.

            So wills the fierce, avenging sprite, Till blood for
            blood atones.                         --Hood.

   7. A bloodthirsty or murderous disposition. [R.]

            He was a thing of blood, whose every motion Was
            timed with dying cries.               --Shak.

   8. Temper of mind; disposition; state of the passions; -- as
      if the blood were the seat of emotions.

            When you perceive his blood inclined to mirth.
                                                  --Shak.

   Note: Often, in this sense, accompanied with bad, cold, warm,
         or other qualifying word. Thus, to commit an act in
         cold blood, is to do it deliberately, and without
         sudden passion; to do it in bad blood, is to do it in
         anger. Warm blood denotes a temper inflamed or
         irritated. To warm or heat the blood is to excite the
         passions. Qualified by up, excited feeling or passion
         is signified; as, my blood was up.

   9. A man of fire or spirit; a fiery spark; a gay, showy man;
      a rake.

            Seest thou not . . . how giddily 'a turns about all
            the hot bloods between fourteen and five and thirty?
                                                  --Shak.

            It was the morning costume of a dandy or blood.
                                                  --Thackeray.

   10. The juice of anything, especially if red.

             He washed . . . his clothes in the blood of grapes.
                                                  --Gen. xiix.
                                                  11.

   Note: Blood is often used as an adjective, and as the first
         part of self-explaining compound words; as,
         blood-bespotted, blood-bought, blood-curdling,
         blood-dyed, blood-red, blood-spilling, blood-stained,
         blood-warm, blood-won.

   {Blood baptism} (Eccl. Hist.), the martyrdom of those who had
      not been baptized. They were considered as baptized in
      blood, and this was regarded as a full substitute for
      literal baptism.

   {Blood blister}, a blister or bleb containing blood or bloody
      serum, usually caused by an injury.

   {Blood brother}, brother by blood or birth.

   {Blood clam} (Zo["o]l.), a bivalve mollusk of the genus Arca
      and allied genera, esp. {Argina pexata} of the American
      coast. So named from the color of its flesh.

   {Blood corpuscle}. See {Corpuscle}.

   {Blood crystal} (Physiol.), one of the crystals formed by the
      separation in a crystalline form of the h[ae]moglobin of
      the red blood corpuscles; h[ae]matocrystallin. All blood
      does not yield blood crystals.

   {Blood heat}, heat equal to the temperature of human blood,
      or about 981/2 [deg] Fahr.

   {Blood horse}, a horse whose blood or lineage is derived from
      the purest and most highly prized origin or stock.

   {Blood money}. See in the Vocabulary.

   {Blood orange}, an orange with dark red pulp.

   {Blood poisoning} (Med.), a morbid state of the blood caused
      by the introduction of poisonous or infective matters from
      without, or the absorption or retention of such as are
      produced in the body itself; tox[ae]mia.

   {Blood pudding}, a pudding made of blood and other materials.
      

   {Blood relation}, one connected by blood or descent.

   {Blood spavin}. See under {Spavin}.

   {Blood vessel}. See in the Vocabulary.

   {Blue blood}, the blood of noble or aristocratic families,
      which, according to a Spanish prover, has in it a tinge of
      blue; -- hence, a member of an old and aristocratic
      family.

   {Flesh and blood}.
       (a) A blood relation, esp. a child.
       (b) Human nature.

   {In blood} (Hunting), in a state of perfect health and vigor.
      --Shak.

   {To let blood}. See under {Let}.

   {Prince of the blood}, the son of a sovereign, or the issue
      of a royal family. The sons, brothers, and uncles of the
      sovereign are styled princes of the blood royal; and the
      daughters, sisters, and aunts are princesses of the blood
      royal.

Heat \Heat\, n. [OE. hete, h[ae]te, AS. h?tu, h?to, fr. h[=a]t
   hot; akin to OHG. heizi heat, Dan. hede, Sw. hetta. See
   {Hot}.]
   1. A force in nature which is recognized in various effects,
      but especially in the phenomena of fusion and evaporation,
      and which, as manifested in fire, the sun's rays,
      mechanical action, chemical combination, etc., becomes
      directly known to us through the sense of feeling. In its
      nature heat is a mode if motion, being in general a form
      of molecular disturbance or vibration. It was formerly
      supposed to be a subtile, imponderable fluid, to which was
      given the name caloric.

   Note: As affecting the human body, heat produces different
         sensations, which are called by different names, as
         heat or sensible heat, warmth, cold, etc., according to
         its degree or amount relatively to the normal
         temperature of the body.

   2. The sensation caused by the force or influence of heat
      when excessive, or above that which is normal to the human
      body; the bodily feeling experienced on exposure to fire,
      the sun's rays, etc.; the reverse of cold.

   3. High temperature, as distinguished from low temperature,
      or cold; as, the heat of summer and the cold of winter;
      heat of the skin or body in fever, etc.

            Else how had the world . . . Avoided pinching cold
            and scorching heat!                   --Milton.

   4. Indication of high temperature; appearance, condition, or
      color of a body, as indicating its temperature; redness;
      high color; flush; degree of temperature to which
      something is heated, as indicated by appearance,
      condition, or otherwise.

            It has raised . . . heats in their faces. --Addison.

            The heats smiths take of their iron are a blood-red
            heat, a white-flame heat, and a sparking or welding
            heat.                                 --Moxon.

   5. A single complete operation of heating, as at a forge or
      in a furnace; as, to make a horseshoe in a certain number
      of heats.

   6. A violent action unintermitted; a single effort; a single
      course in a race that consists of two or more courses; as,
      he won two heats out of three.

            Many causes . . . for refreshment betwixt the heats.
                                                  --Dryden.

            [He] struck off at one heat the matchless tale of
            ``Tam o'Shanter.''                    --J. C.
                                                  Shairp.

   7. Utmost violence; rage; vehemence; as, the heat of battle
      or party. ``The heat of their division.'' --Shak.

   8. Agitation of mind; inflammation or excitement;
      exasperation. ``The head and hurry of his rage.'' --South.

   9. Animation, as in discourse; ardor; fervency.

            With all the strength and heat of eloquence.
                                                  --Addison.

   10. Sexual excitement in animals.

   11. Fermentation.

   {Animal heat}, {Blood heat}, {Capacity for heat}, etc. See
      under {Animal}, {Blood}, etc.

   {Atomic heat} (Chem.), the product obtained by multiplying
      the atomic weight of any element by its specific heat. The
      atomic heat of all solid elements is nearly a constant,
      the mean value being 6.4.

   {Dynamical theory of heat}, that theory of heat which assumes
      it to be, not a peculiar kind of matter, but a peculiar
      motion of the ultimate particles of matter.

   {Heat engine}, any apparatus by which a heated substance, as
      a heated fluid, is made to perform work by giving motion
      to mechanism, as a hot-air engine, or a steam engine.

   {Heat producers}. (Physiol.) See under {Food}.

   {Heat rays}, a term formerly applied to the rays near the red
      end of the spectrum, whether within or beyond the visible
      spectrum.

   {Heat weight} (Mech.), the product of any quantity of heat by
      the mechanical equivalent of heat divided by the absolute
      temperature; -- called also {thermodynamic function}, and
      {entropy}.

   {Mechanical equivalent of heat}. See under {Equivalent}.

   {Specific heat of a substance} (at any temperature), the
      number of units of heat required to raise the temperature
      of a unit mass of the substance at that temperature one
      degree.

   {Unit of heat}, the quantity of heat required to raise, by
      one degree, the temperature of a unit mass of water,
      initially at a certain standard temperature. The
      temperature usually employed is that of 0[deg] Centigrade,
      or 32[deg] Fahrenheit.

Source : WordNet®

blood heat
     n : temperature of the body; normally 98.6 F or 37 C in humans;
         usually measured to obtain a quick evaluation of a
         person's health [syn: {body temperature}]