English Words Starting With H

• hydatid

  adjectivenounC2
  /ˈhʌɪdətɪd/A cyst formed by the larval stage of certain tapeworms, especially those of the genus Echinococcus.
• hyde

  nounB1
  /haɪd/To put or keep out of sight; to conceal oneself or something.
• hyde park

  nounB2
  /ˌhaɪd ˈpɑːk/A large royal park in central London.
• hyder ali

  nounLow
  /ˈhaɪdər ˈɑːli/A proper noun referring to an 18th-century Muslim ruler of the Kingdom of Mysore in southern India.
• hyderabad

  nounLow (as a proper noun for a specific place); Very Low (in extended uses).
  /ˌhaɪdərəˈbɑːd/The name of a major city in southern India, the capital of the Indian state of Telangana.
• hydnocarpate

  nounObscure/Rare
  /hɪdˈnɒk.ə.peɪt/A salt or ester of hydnocarpic acid, an unsaturated fatty acid derived from chaulmoogra oil.
• hydnocarpic acid

  nounC2
  /ˌhɪdnə(ʊ)ˈkɑːpɪk ˈæsɪd/A specific unsaturated fatty acid (C₁₆H₂₈O₂) derived from the oil of plants in the genus Hydnocarpus, historically used in the treatment of leprosy.
• hydra

  nounC1-C2
  /ˈhaɪ.drə/A mythological serpent-like monster with many heads, each of which grows back when cut off.
• hydracid

  nounVery low
  /haɪˈdræsɪd/An acid that does not contain oxygen and is composed of hydrogen combined with another element or radical.
• hydragogue

  adjectivenounVery Rare / Obsolete
  /ˈhʌɪdrəɡɒɡ/A drug or agent that causes a very watery discharge, especially from the bowels; a drastic purgative that promotes the discharge of water from the body.
• hydralazine

  nounVery Low
  /haɪˈdræl.ə.ziːn/A medication used to treat high blood pressure and heart failure by relaxing blood vessels.
• hydramine

  nounC2
  /haɪˈdræm.iːn/A compound derived from ammonia by replacement of hydrogen by hydrocarbon groups, especially referring to hydroxyl-containing amines.
• hydrangea

  nounC1
  /haɪˈdreɪn.dʒə/A garden shrub with large, round clusters of white, pink, or blue flowers, often grown for ornamental purposes.
• hydrant

  nounC1
  /ˈhaɪ.drənt/A fixed water outlet, typically in a street, connected to a public water supply for use in firefighting.
• hydranth

  nounVery Rare
  /ˈhʌɪdrənθ/A feeding zooid (individual) in a hydroid colony, typically forming the nutritive polyps.
• hydrargillite

  nounVery Low (Extremely specialized)
  /haɪˈdrɑːdʒɪlaɪt/A specific, naturally occurring mineralogical form of aluminum hydroxide.
• hydrargyria

  nounC2 (Very rare, specialized term)
  /haɪˌdrɑːˈdʒɪrɪə/The medical condition of mercury poisoning, chronic intoxication caused by exposure to mercury.
• hydrargyrism

  nounVery Rare
  /haɪˈdrɑːdʒɪrɪzəm/Chronic mercury poisoning.
• hydrargyrum

  nounVery Low / Obsolete / Technical
  /haɪˈdrɑːdʒɪrəm/The element mercury (Hg).
• hydrase

  nounVery Rare
  /ˈhaɪdreɪz/An enzyme that catalyzes the addition or removal of water (H2O) to or from a substrate without splitting the substrate into smaller molecules.

Showing 5381–5400 of 5990 words.