English Words Starting With H

• hallway

  nounHigh
  /ˈhɔːlweɪ/An interior passageway or corridor in a building, typically connecting rooms.
• hally

  nounExtremely low
  /ˈhæli/A rare, non-standard adjective describing something characterized by, or reminiscent of, a hall or hallway.
• halm

  nounLow (Technical/Literary)
  /hɑːm/The dry, coarse stems or stalks of cultivated plants, especially of grasses like wheat or barley, remaining after the grain has been harvested.
• halma

  nounRare
  /ˈhælmə/A board game for two or four players, played on a checkered board, where the objective is to move all one's pieces from one corner to the opposite corner by jumping over other pieces.
• halmahera

  nounC1
  /ˌhælməˈhɪərə/A large, mountainous island in the Maluku Islands of eastern Indonesia.
• halmstad

  nounVery Low
  /ˈhælmstɑːd/A city in southwestern Sweden, located at the mouth of the Nissan river on the Kattegat coast of Halland province.
• halo

  nounverbverb-intransitiveverb-transitiveB1
  /ˈheɪ.ləʊ/A circle of light depicted around the head of a sacred or venerated figure, especially in religious art.
• halo blight

  nounC2
  /ˈheɪləʊ blaɪt/A plant disease affecting legumes, caused by bacteria (Pseudomonas syringae pv. phaseolicola), characterized by water-soaked leaf lesions surrounded by a pale yellow or white halo.
• halo effect

  nounC1
  /ˈheɪləʊ ɪˌfɛkt/A cognitive bias in which an overall impression of a person, brand, or thing influences how we feel and think about their other traits or characteristics.
• haloarchaea

  plural-nounVery low (specialist scientific term)
  /ˌheɪləʊɑːˈkiːə/Microorganisms belonging to the class Halobacteria, within the domain Archaea, that require high-salt environments to survive and grow.
• halobacteria

  plural-nounC1/C2 (specialized)
  /ˌheɪləʊbækˈtɪəriə/A genus of extremely halophilic (salt-loving) archaea that require very high salt concentrations to survive, found in environments like salt lakes and salt evaporation ponds.
• halobiont

  nounVery Low
  /ˌhæləʊˈbaɪɒnt/An organism that lives in a salty environment.
• halocarbon

  nounC2
  /ˈhæləʊˌkɑːbən/A chemical compound consisting of carbon and one or more halogens (fluorine, chlorine, bromine, iodine, astatine).
• halocline

  nounC2
  /ˈhælə(ʊ)klaɪn/A distinct vertical gradient in salinity within a body of water.
• halogen

  nounC1
  /ˈhælədʒən/Any of a group of five chemically related nonmetallic elements (fluorine, chlorine, bromine, iodine, astatine) that form salts when they react with metals.
• halogen lamp

  nounC1
  /ˈhælədʒən læmp/A type of incandescent lamp containing a halogen gas (e.g., iodine or bromine) that increases light output and extends filament life.
• halogenate

  verbverb-transitiveLow
  /ˈhælədʒəneɪt/To introduce a halogen atom (fluorine, chlorine, bromine, iodine, or astatine) into an organic compound through a chemical reaction.
• haloid

  adjectivenounC2+ (Very Rare / Technical)
  /ˈheɪlɔɪd/A chemical compound formed from a halogen and another element or radical, especially a binary compound.
• halon

  nounC2 / Very Low-Frequency Technical Term
  /ˈheɪlɒn/A halogenated hydrocarbon used in fire extinguishing systems, known for its effectiveness but now largely phased out due to environmental damage.
• haloperidol

  nounC2
  /ˌhalə(ʊ)ˈpɛrɪdɒl/A potent antipsychotic medication primarily used to treat schizophrenia and acute psychotic states.

Showing 541–560 of 5990 words.