English Words Starting With H

• hyperpolarize

  verb-intransitiveverb-transitiveC2
  /ˌhaɪ.pəˈpəʊ.lə.raɪz/To increase the polarity of a cell membrane, making the inside more negative relative to the outside.
• hyperpotassemia

  nounRare / Technical
  /ˌhaɪ.pə.pəʊ.tæˈsiː.mi.ə/An abnormally high concentration of potassium in the blood.
• hyperpower

  nounC2
  /ˈhaɪ.pəˌpaʊə(r)/An extremely dominant nation-state with overwhelming global supremacy in all key spheres (military, economic, cultural, technological).
• hyperprosexia

  nounVery Low (Specialized Technical Term)
  /ˌhaɪ.pə.prəʊˈsɛk.si.ə/An abnormally intense and obsessive state of concentration or attention to a single stimulus.
• hyperpyrexia

  nounC2/Professional/Technical
  /ˌhaɪ.pə.paɪˈrek.si.ə/An extremely high fever, specifically a body temperature exceeding 41.5°C (106.7°F).
• hyperreal

  adjectivenounC2
  /ˌhaɪ.pəˈrɪəl/Exaggerated or more intense than reality, often referring to a simulation or representation that is perceived as more 'real' or authentic than the actual reality it represents, particularly in philosophy and cultural theory.
• hyperreal number

  nounVery Low
  /ˌhaɪpəˈrɪəl ˈnʌmbə/A number in an extended number system that includes infinite and infinitesimal quantities, forming the foundation of non-standard analysis.
• hyperrealism

  nounLow (specialist/art/academic term)
  /ˌhaɪ.pəˈrɪə.lɪ.zəm/A genre of art, photography, or sculpture that creates a detailed, precise illusion of reality, often more convincing than reality itself.
• hyperreality

  nounLow
  /ˌhaɪpəriˈælɪti/A state where simulations or mediated experiences are perceived as more real than actual reality.
• hypersecretion

  nounC1
  /ˌhaɪ.pə.sɪˈkriː.ʃən/Excessive production and release of a substance by a gland or cell.
• hypersensitize

  verbverb-transitiveLow
  /ˌhaɪ.pəˈsen.sɪ.taɪz/To make (someone or something) extremely or excessively sensitive to a particular substance, stimulus, or situation.
• hypersexual

  adjectivenounC1/C2
  /ˌhaɪ.pəˈsek.ʃu.əl/Having an excessive or unusually high interest in, or preoccupation with, sexual activity, thoughts, or fantasies.
• hypersexuality

  nounLow-Frequency
  /ˌhaɪ.pəˌsek.ʃuˈæl.ə.ti/An excessive or significantly increased preoccupation with or drive for sexual thoughts, fantasies, or behaviours.
• hypersomnia

  nounLow
  /ˌhaɪ.pəˈsɒm.ni.ə/A medical condition characterized by excessive daytime sleepiness or prolonged nighttime sleep.
• hyperspace

  nounC2
  /ˈhaɪ.pə.speɪs/In science fiction, a theoretical space of more than three dimensions, enabling faster-than-light travel by creating a shortcut or tunnel.
• hypersphere

  nounC2
  /ˈhaɪ.pə.sfɪə(r)/The n-dimensional analogue of a sphere; specifically, the set of all points in (n+1)-dimensional Euclidean space that are at a fixed distance (radius) from a given central point.
• hypersplenism

  nounC2 (Proficient)
  /ˌhaɪ.pəˈspliː.nɪ.zəm/A medical condition characterised by excessive or premature destruction of blood cells by the spleen, often resulting in anaemia, leukopenia, or thrombocytopenia.
• hypersthene

  nounVery Low
  /ˈhaɪpəsθiːn/A dark-green to black mineral of the pyroxene group, found in igneous and some metamorphic rocks.
• hypersurface

  nounVery low
  /ˈhaɪpəˌsɜːfɪs/A generalization of a surface to higher dimensions; in mathematics, a submanifold of codimension one.
• hypertension

  nounC1
  /ˌhaɪ.pəˈten.ʃən/A medical condition in which the pressure of the blood against the artery walls is consistently too high.

Showing 5761–5780 of 5990 words.