English Words Starting With H

• hypoxemia

  nounLow
  /ˌhaɪ.pɒkˈsiː.mi.ə/An abnormally low concentration of oxygen in the blood.
• hypoxia

  nounC1/C2
  /haɪˈpɒk.si.ə/A deficiency in the amount of oxygen reaching the body's tissues.
• hypozeugma

  nounVery Rare
  /ˌhʌɪpə(ʊ)ˈzjuːɡmə/A rhetorical device where a verb or modifier that applies to multiple preceding clauses is placed only with the final one.
• hypozeuxis

  nounExtremely Rare
  /ˌhʌɪpəʊˈzjuːksɪs/A rhetorical figure of speech in which every clause or phrase has its own distinct subject and verb, avoiding ellipsis.
• hypo–

  nounverb-transitiveLow
  /haɪ.pəʊ/A prefix meaning 'under', 'beneath', 'below normal', or 'less than'.
• hypsilantis

  nounVery Low
  /ˌhɪpsɪˈlæntɪs/A proper noun referring to a genus of butterflies in the family Lycaenidae, found in Australasia.
• hypsography

  nounLow (Rare technical term)
  /hɪpˈsɒɡ.rə.fi/The study or mapping of the height, depth, and elevation of land surfaces relative to a reference level, especially sea level.
• hypsometer

  nounVery Rare / Technical
  /hɪpˈsɒm.ɪ.tə/An instrument for measuring altitude or height, especially by determining the boiling point of water (which varies with atmospheric pressure).
• hypsometry

  nounC2 - Very Rare
  /hɪpˈsɒmɪtri/The measurement of elevation and altitude of land features, often represented through contour lines on a map.
• hyracoid

  adjectivenounVery Low
  /ˈhʌɪrəkɔɪd/Resembling or related to hyraxes (small, herbivorous mammals).
• hyracotherium

  nounVery Low
  /ˌhʌɪrəkə(ʊ)ˈθɪərɪəm/An extinct, small, early Eocene ungulate mammal, considered a primitive ancestor of the horse.
• hyrax

  nounLow
  /ˈhaɪ.ræks/A small, furry mammal native to Africa and the Middle East, resembling a rodent but phylogenetically related to elephants and manatees.
• hyrcania

  nounVery Low / Archaic
  /hɜːˈkeɪ.ni.ə/An ancient historical region in Central Asia, southeast of the Caspian Sea.
• hyson

  nounC2+
  /ˈhaɪs(ə)n/A type of high-quality Chinese green tea consisting of leaves harvested early in the spring.
• hyssop

  nounLow
  /ˈhɪsəp/A small, bushy aromatic plant of the mint family, historically used for medicinal and ceremonial purposes.
• hysterectomize

  verbverb-transitiveVery Low
  /ˌhɪstəˈrektəmaɪz/To surgically remove the uterus.
• hysterectomy

  nounC1-C2
  /ˌhɪstəˈrektəmi/A surgical operation to remove the uterus (womb) from a person's body.
• hysteresis

  nounC2
  /ˌhɪs.təˈriː.sɪs/A phenomenon in which the state of a system depends on its history; the lagging of an effect behind its cause.
• hysteresis loop

  nounVery Low Frequency (Academic/Technical)
  /ˌhɪs.təˈriː.sɪs luːp/A closed curve on a graph representing the lagging effect in a system's response to changing forces.
• hysteresis loss

  nounLow
  /ˌhɪstəˈriːsɪs lɒs/The energy dissipated as heat in a magnetic material when it is subjected to a changing magnetic field, due to the lag (hysteresis) between the magnetisation of the material and the applied field.

Showing 5961–5980 of 5990 words.