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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)

hemiglobin
nounExtremely Low/Very Technical
/ˌhiːmɪˈɡləʊbɪn/A variant or altered form of the oxygen-carrying protein hemoglobin, typically found in the blood.
hemihydrate
nounC2
/ˌhɛmɪˈhaɪdreɪt/a crystalline substance containing half a molecule of water per molecule of the compound, often referring to a specific form of calcium sulphate (plaster of Paris).
hemikaryon
nounTechnical/Scientific
/ˌhɛmɪˈkarɪɒn/A cell nucleus containing half the usual diploid number of chromosomes (haploid nucleus).
hemimetabolism
nounC2
/ˌhɛmɪmɪˈtæbəlɪz(ə)m/A type of insect development involving incomplete metamorphosis, where there is no pupal stage and nymphs resemble wingless adults.
hemimorphite
nounExtremely Rare
/ˌhɛmɪˈmɔːfaɪt/A crystalline mineral composed of zinc silicate hydroxide.
hemin
nounC2/Technical
/ˈhiːmɪn/The crystalline form of heme (blood pigment) used in scientific identification of blood.
hemingway
nounB2
/ˈhɛmɪŋweɪ/Ernest Hemingway (1898–1961), a famous American novelist and short-story writer.
hemiola
nounC2
/ˌhɛmɪˈəʊlə/A musical rhythmic pattern where three notes of equal duration are played in the time normally occupied by two notes of the same duration, creating a cross-rhythm (e.g., 3 against 2).
hemiopia
nounVery low
/ˌhɛmɪˈəʊpɪə/A visual defect in which half of the field of vision is lost, typically as a result of damage to the visual pathways in the brain.
hemiparasite
nounC2
/ˌhɛmɪˈpærəsaɪt/A plant that obtains some, but not all, of its nutrients from a host plant, while also performing some photosynthesis itself.
hemiparesis
nounC2
/ˌhɛmɪpəˈriːsɪs/Muscle weakness or partial paralysis affecting one side of the body.
hemiplankton
nounC2+
/ˌhɛmɪˈplaŋ(k)t(ə)n/Planktonic organisms that spend only part of their life cycle (e.g., larval stage) as plankton, becoming sessile or nektonic in adulthood.
hemiplegia
nounC2
/ˌhɛmɪˈpliːdʒə/Paralysis of one side of the body.
hemipode
nounVery Low
/ˈhɛmɪpəʊd/A small, quail-like bird belonging to the family Turnicidae, known for lacking a hind toe.
hemiptera
nounC2
/hɪˈmɪptərə/A large order of insects with piercing and sucking mouthparts, often called true bugs.
hemipteran
adjectivenounLow (Technical Term)
/hɪˈmɪptərən/An insect of the order Hemiptera, characterized by piercing and sucking mouthparts.
hemiscotosis
nounVery low
/ˌhɛmɪskəʊˈtəʊsɪs/Half-blindness; partial loss of vision affecting one half of the visual field.
hemisect
verb-transitiveVery Low
/ˈhɛmɪsɛkt/to cut into two equal halves.
hemisphere
nounB2
/ˈhem.ɪ.sfɪər/One half of a sphere, especially of the earth or the brain.
hemispheroid
nounC1/C2
/ˌhɛmɪˈsfɪərɔɪd/A geometric shape that is approximately half of a spheroid (a sphere-like, ellipsoidal solid).

Showing 2321–2340 of 5990 words.