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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)

hexokinase
nounC2
/ˌhɛksəʊˈkaɪneɪz/An enzyme that facilitates the first step in glucose metabolism by phosphorylating glucose.
hexone
nounVery Low (Specialist)
/ˈhɛksəʊn/A specific chemical compound, primarily methyl isobutyl ketone, a solvent used in industrial processes.
hexosamine
nounVery Low
/ˌhɛk.səʊˈsæ.miːn/An amino sugar derived from a hexose, a type of simple sugar.
hexosan
nounRare / Scientific
/ˈhɛksə(ʊ)ˌsan/A polysaccharide whose molecule yields hexoses on hydrolysis.
hexose
nounC2
/ˈhɛksəʊz/Any monosaccharide containing six carbon atoms per molecule.
hexyl
adjectivenounVery low/C1+ (technical/scientific only)
/ˈhɛksɪl/A radical or group derived from hexane, consisting of six carbon atoms arranged in a chain (C₆H₁₃).
hexyl group
nounC2
/ˈhɛksɪl ɡruːp/A univalent alkyl group or substituent derived from hexane, with the chemical formula -C₆H₁₃.
hexylresorcinol
nounC2
/ˌhɛksɪlrɪˈzɔːsɪnɒl/A phenolic antiseptic compound, often used in throat lozenges and as a topical antiseptic.
hey rube
interjectionnounVery Low
/ˌheɪ ˈruːb/A rallying cry or call for help used by circus and carnival workers when a fight or conflict breaks out with members of the public.
heyday
nounC1
/ˈheɪ.deɪ/The period of a person's or thing's greatest success, popularity, or vigor.
heyduck
nounVery Low / Archaic
/ˈheɪdʌk/A historical Central European armed retainer or foot-soldier, often from Hungary or Poland, serving in a noble's private military force.
heyer
nounExtremely low (obsolete/archaic/dialectal)
An archaic or dialectal comparative form of the adjective 'high'; higher.
heyerdahl
nounC2
/ˈheɪ.ə.dɑːl/A proper noun referring to Thor Heyerdahl, the Norwegian ethnographer and adventurer known for transoceanic expeditions to demonstrate ancient migration theories.
heymans
nounVery Low
/ˈheɪmænz/A surname of Dutch or Belgian origin.
heyrovsky
nounVery Rare
/heɪˈrɒfski/Relating to or derived from Jaroslav Heyrovský (1890–1967), a Czech chemist and Nobel laureate.
heyse
nounVery Low / Obsolete
/haɪs/A largely obsolete variant or misspelling of the name 'Heise' or an extremely rare, non-standard form related to 'hoist' or 'raise'.
heysham
nounC2 (Very Low Frequency / Proper Noun)
/ˈhiːʃəm/A proper noun referring to a coastal town in Lancashire, England.
heyward
nounVery Low
/ˈheɪwəd/A surname of English origin, often functioning as a proper noun.
heywood
nounLow
/ˈheɪwʊd/A proper noun, primarily a surname or place name.
hezbollah
nounC1/C2
/ˌhɛzbəˈlɑː/A major political and military organization in Lebanon, founded in the 1980s.

Showing 2901–2920 of 5990 words.