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English Words Starting With H

5,990 entries — pick a word to see its definition, pronunciation, and usage.

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Noun Verb Adjective Adverb Plural noun Combining form Verb (transitive)Verb (intransitive)Verb (ambitransitive)

heme
nounC2
/hiːm/The deep red, iron-containing component of hemoglobin and other proteins in the blood, which binds to and transports oxygen.
hemel hempstead
nounLow
/ˌhɛməl ˈhɛmpstɪd/A large town in Hertfordshire, southeast England, designated as a New Town in 1946 to accommodate post-war population growth.
hemelytron
nounVery Rare
/hɛˈmɛlɪtrɒn/A specialized forewing of certain insects, particularly true bugs (Hemiptera), which is leathery at the base and membranous at the tip.
hemeralopia
nounVery Low
/ˌhɛmərəˈləʊpɪə/A medical condition in which vision is normal in dim light but poor in bright light; day blindness.
hemerocallis
nounLow
/ˌhɛmərə(ʊ)ˈkalɪs/A genus of flowering plants in the family Asphodelaceae, commonly known as daylilies, because each flower typically lasts only one day.
hemet
nounB1
/ˈhelmɪt/A protective metal or composite helmet; a head covering for defence in combat, work, or sport.
hemi
nounprefixLow
/ˈhɛmi/A prefix meaning 'half' or 'partial', derived from Greek.
hemi-head
adjectivenounRare
/ˈhɛmi ˌhɛd/A colloquial term for a person who is a strong enthusiast, follower, or performer of the music of Led Zeppelin and/or the band's guitarist Jimmy Page. The term refers specifically to a serious, knowledgeable fan.
hemiacetal
nounLow
/ˌhɛmɪˈæsɪt(ə)l/A chemical compound formed by the reaction of an aldehyde or ketone with one molecule of an alcohol.
hemialgia
nounVery low
/ˌhɛmɪˈældʒɪə/Pain affecting one side of the body.
hemianopia
nounC2
/ˌhɛmɪəˈnəʊpɪə/A medical condition involving loss of half of the visual field in one or both eyes.
hemianopsia
nounVery Low
/ˌhɛmɪəˈnəʊpɪə/A medical condition involving blindness in half of the visual field of one or both eyes.
hemicellulose
nounC2
/ˌhemɪˈseljʊləʊs/A polysaccharide component of plant cell walls, less complex than cellulose.
hemichordate
adjectivenounC2
/ˌhɛmɪˈkɔːdeɪt/A member of a phylum of marine invertebrates that share some but not all chordate characteristics, such as a primitive notochord-like structure.
hemicrania
nounC2
/ˌhɛmɪˈkreɪnɪə/A medical term for pain affecting one side of the head.
hemicryptophyte
nounVery Low (Rare)
/ˌhɛmɪˈkrɪptə(ʊ)faɪt/A type of plant whose buds survive unfavorable seasons at or just below the soil surface, protected by soil or leaf litter.
hemicycle
nounLow
/ˈhem.ɪ.saɪ.kəl/A semicircular or curved structure or arrangement.
hemicyclium
nounVery Rare / Obsolete
/ˌhɛmɪˈsɪklɪəm/An ancient Greek sundial shaped like a concave quarter-sphere, often placed on a vertical surface to tell time from the shadow cast by a gnomon.
hemidemisemiquaver
nounRare / Technical
/ˌhɛmɪˌdɛmɪˈsɛmɪkweɪvə/A musical note with the time value of half of a demisemiquaver, equal to one sixty-fourth of a whole note.
hemielytron
nounExtremely rare / technical
/ˌhɛmɪˈɛlɪtrɒn/The forewing of true bugs (order Hemiptera), specifically the thickened basal half of the forewing, as distinct from the membranous apical half.

Showing 2301–2320 of 5990 words.