English Words Starting With H

• hyperaldosteronism

  nounlow
  /ˌhaɪ.pər.ælˈdɒs.tər.əˌnɪ.zəm/A medical disorder characterized by excessive production of the hormone aldosterone by the adrenal glands.
• hyperalgesia

  nounLow
  /ˌhaɪ.pə.rælˈdʒiː.zi.ə/An abnormally heightened sensitivity to pain.
• hyperalimentation

  nounC2
  /ˌhaɪ.pərˌæl.ɪ.menˈteɪ.ʃən/The administration of nutrients intravenously, bypassing the digestive tract, to provide complete nutritional support.
• hyperanakinesia

  nounExtremely Rare
  /ˌhaɪ.pər.ˌæn.ə.kɪˈniː.zi.ə/A condition of excessive and involuntary movement or activity; extreme motor restlessness or physical agitation.
• hyperaphia

  nounVery rare / Technical
  /ˌhaɪ.pərˈeɪ.fi.ə/A heightened, abnormal, or extreme sensitivity to touch.
• hyperbaric chamber

  nounC1
  /ˌhaɪ.pəˌbær.ɪk ˈtʃeɪm.bər/A sealed, pressurised vessel in which patients breathe pure oxygen, used for medical treatment.
• hyperbaton

  nounC2+
  /haɪˈpɜːbətɒn/A rhetorical figure in which the usual word order of a phrase or sentence is inverted for emphasis or stylistic effect.
• hyperbilirubinemia

  nounRare
  /ˌhaɪ.pəˌbɪl.ɪˌruː.bɪˈniː.mi.ə/An excessive level of bilirubin in the blood.
• hyperbola

  nounC2 (Very Low Frequency)
  /haɪˈpɜː.bəl.ə/A symmetrical open curve formed by the intersection of a cone with a plane at a smaller angle to its axis than the side of the cone; a type of conic section with eccentricity greater than 1.
• hyperbole

  nounC1
  /haɪˈpɜː.bəl.i/A figure of speech involving intentional and obvious exaggeration not meant to be taken literally, used for emphasis or effect.
• hyperbolic function

  nounC2 (Highly specialized technical term)
  /ˌhaɪ.pəˌbɒl.ɪk ˈfʌŋk.ʃənz/A function that is analogous to a trigonometric function but defined using hyperbolas instead of circles; specifically, one of six basic functions (sinh, cosh, tanh, csch, sech, coth) derived from the exponential function and relating to hyperbolas.
• hyperbolic geometry

  nounLow (C2)
  /ˌhaɪ.pəˌbɒl.ɪk dʒiˈɒm.ə.tri/A non-Euclidean geometry where Euclid's parallel postulate is replaced by the postulate that through any point not on a given line, infinitely many lines can be drawn parallel to that line.
• hyperbolic paraboloid

  nounC2
  /ˌhaɪ.pɜːˈbɒl.ɪk pəˈræb.ə.lɔɪd/A specific type of three-dimensional ruled surface with a distinctive saddle shape.
• hyperbolism

  nounC2
  /haɪˈpɜː.bə.lɪ.zəm/The use of hyperbole; deliberate and obvious exaggeration for rhetorical effect.
• hyperbolize

  verbverb-intransitiveverb-transitiveC1/C2
  /haɪˈpɜː.bə.laɪz/To exaggerate or represent something as being greater, more extreme, or more important than it really is.
• hyperboloid

  nounC2 - Very low frequency; highly technical/specialized.
  /haɪˈpɜːbəlɔɪd/A quadric surface (a surface defined by a quadratic equation) that resembles a hyperbola in its cross-sections, specifically a surface that can be generated by rotating a hyperbola around one of its axes.
• hyperborean

  adjectivenounC2/Rare/Literary
  /ˌhʌɪpəˈbɔːrɪən/Relating to the extreme north; arctic.
• hypercalcemia

  nounLow
  /ˌhaɪ.pə.kælˈsiː.mi.ə/A medical condition characterized by an abnormally high level of calcium in the blood.
• hypercalciuria

  nounVery low
  /ˌhaɪ.pə.kæl.sɪˈjʊə.ri.ə/An abnormally high level of calcium in the urine.
• hypercapnia

  nounC2
  /ˌhʌɪpəˈkapnɪə/An abnormally high concentration of carbon dioxide (CO₂) in the arterial blood.

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