Browse by letter

English Words Starting With H

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

Filter

Parts of speech

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

histiocyte
nounVery Low
/ˈhɪstɪə(ʊ)saɪt/A large phagocytic cell that is part of the body's immune system, found in connective tissues.
histoblast
nounVery low
/ˈhɪstə(ʊ)ˌblɑːst/A primordial or embryonic cell capable of developing into a specific type of tissue.
histochemistry
nounC2
/ˌhɪstəʊˈkemɪstri/The branch of science that studies the chemical composition and reactions within biological tissues, usually using stains and dyes visible under a microscope.
histocompatibility
nounVery Low
/ˌhɪstəʊkəmˌpætəˈbɪləti/The state or condition in which cells or tissues from one organism can survive and be accepted by the immune system of another organism without being rejected.
histocompatibility antigen
nounTechnical / C2
/ˌhɪstəʊkəmˌpætəˈbɪləti ˈæntɪdʒən/A cell surface protein that triggers an immune response if recognized as foreign.
histodialysis
nounExtremely Rare
/ˌhɪstəʊdaɪˈælɪsɪs/The dissolution or disintegration of organic tissue.
histogen
nounExtremely low
/ˈhɪstə(ʊ)dʒən/A layer of cells in a plant, such as a root tip or shoot apex, from which specific tissues develop.
histogenesis
nounC2
/ˌhɪstə(ʊ)ˈdʒɛnɪsɪs/The formation and development of biological tissues from undifferentiated cells.
histogram
nounC2
/ˈhɪstəˌɡræm/A graphical representation of the distribution of numerical data, using bars of different heights where the width of each bar represents a range of values and the height represents the frequency of data within that range.
histography
nounExtremely low
/hɪˈstɒɡrəfi/The study or description of organic tissues.
histologist
nounC2
/hɪˈstɒlədʒɪst/A scientist who specializes in the study of the microscopic structure of biological tissues.
histology
nounC1/C2
/hɪˈstɒlədʒi/The scientific study of the microscopic structure of biological tissues.
histolysis
nounVery Low Frequency / Technical
/hɪˈstɒlɪsɪs/The breakdown or dissolution of organic tissues, especially as a normal physiological process in the transformation of tissues during metamorphosis or other development.
histomorphology
nounVery Low
/ˌhɪs.təʊ.mɔːˈfɒl.ə.dʒi/The study of the microscopic structure and form of tissues.
histone
nounC2
/ˈhɪstəʊn/Any of a group of basic proteins found in chromatin.
histopathology
nounC2
/ˌhɪstəʊpəˈθɒlədʒi/The microscopic examination of diseased tissue to diagnose disease, especially cancer.
histophysiology
nounVery Rare
/ˌhɪs.təʊ.fɪz.iˈɒl.ə.dʒi/The study of the functions of the tissues of organisms.
histoplasmosis
nounLow
/ˌhɪstəʊplæzˈməʊsɪs/A fungal infection caused by inhaling spores of the fungus Histoplasma capsulatum, primarily affecting the lungs.
historian
nounC1
/hɪˈstɔː.ri.ən/A scholar or expert who studies, researches, writes about, and interprets past events, particularly human history.
historic county
nounC1
/hɪˌstɒr.ɪk ˈkaʊn.ti/A geographical county of England, Scotland, Wales, or Ireland as established by historical tradition and administrative practice, often dating back centuries, before major local government reorganisations in the late 20th century.

Showing 3401–3420 of 5990 words.