Nouns in english starting with H

• halo — Noun – English ～ a circle of light around the sun or moon
• haloalkane — Noun – English ～ organic compound in which halogen atoms have been substituted for hydrogen atoms in an alkane
• halobacter — Noun – English ～ halophiles in saline environments such as the Dead Sea or salt flats
• halobacteria — Noun – English ～ halophiles in saline environments such as the Dead Sea or salt flats
• halobacterium — Noun – English ～ halophiles in saline environments such as the Dead Sea or salt flats
• halocarbon — Noun – English ～ one of various compounds of carbon and any of the halogens
• Halocarpus — Noun – English ～ dioecious trees or shrubs of New Zealand; similar in habit to Dacrydium
• Halocarpus bidwilli — Noun – English ～ New Zealand shrub
• Halimodendron halodendron — Noun – English ～ spiny shrub of the Caspian salt plains and Siberia having elegant silvery, downy young foliage and mildly fragrant pink-purple blooms
• haloform — Noun – English ～ compounds with the formula CHX3, where X is a halogen atom
• halogen — Noun – English ～ any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
• halogeton — Noun – English ～ a coarse annual herb introduced into North America from Siberia; dangerous to sheep and cattle on western rangelands because of its high oxalate content
• Halogeton glomeratus — Noun – English ～ a coarse annual herb introduced into North America from Siberia; dangerous to sheep and cattle on western rangelands because of its high oxalate content
• halon — Noun – English ～ a compound in which the hydrogen atoms of a hydrocarbon have been replaced by bromine and other halogen atoms; very stable; used in fire extinguishers although it is thought to release bromine that depletes the ozone layer
• haloperidol — Noun – English ～ tranquilizer (trade name Haldol) used to treat some psychotic disorders and Tourette's syndrome
• halophil — Noun – English ～ archaebacteria requiring a salt-rich environment for growth and survival
• halophile — Noun – English ～ archaebacteria requiring a salt-rich environment for growth and survival
• halophyte — Noun – English ～ plant growing naturally in very salty soil
• Haloragaceae — Noun – English ～ a family of dicotyledonous plants of the order Myrtales
• Haloragidaceae — Noun – English ～ a family of dicotyledonous plants of the order Myrtales

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