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English Words Starting With B

10,030 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)

bionomy
nounLow (Technical/Scientific)
/baɪˈɒn.ə.mi/The laws, principles, or science of life; the study of the vital functions and relationships of living organisms, particularly focusing on their modes of life and interactions with their environment.
biopesticide
nounC1-C2
/ˌbaɪ.əʊˈpest.ɪ.saɪd/A pesticide derived from natural materials such as animals, plants, bacteria, and certain minerals.
biopharmaceutical
adjectivenounLow
/ˌbaɪəʊˌfɑːməˈsjuːtɪk(ə)l/A medical drug produced using biotechnology, involving living organisms or their components.
biophilia
nounC2
/ˌbaɪəʊˈfɪlɪə/An innate human tendency to seek connections with nature and other forms of life.
biophysics
nounC1/C2
/ˌbaɪ.əʊˈfɪz.ɪks/The scientific discipline that applies the theories and methods of physics to understand biological systems and processes.
biopic
nounC1
/ˈbaɪ.əʊ.pɪk/A film or television drama portraying the life of a real, usually famous person.
biopiracy
nounLow (C1-C2)
/ˌbaɪəʊˈpaɪrəsi/The unethical and/or illegal exploitation or commercial use of biological resources and/or traditional knowledge, often from indigenous or local communities, without their permission and/or without fair compensation.
bioplasm
nounVery Rare / Obsolete
/ˈbaɪəʊˌplæzəm/A term from obsolete biological theory referring to the essential living, formative substance of cells, distinct from non-living matter.
bioplastic
nounC1
/ˈbaɪ.əʊˌplæs.tɪk/A type of plastic derived from renewable biomass sources, such as vegetable oils, corn starch, or microbes.
biopoiesis
nounVery Low (C2)
/ˌbaɪəʊpɔɪˈiːsɪs/The process of living matter arising from non-living matter.
biopolymer
nounLow
/ˌbaɪ.əʊˈpɒl.ɪ.mər/A polymer produced by a living organism; a large molecule composed of biological building blocks.
bioprocess
adjectivenounverb-transitiveC2
/ˈbaɪ.əʊˌprəʊ.ses/A specific process that uses living cells or their components (like enzymes) to obtain desired products.
bioprospecting
nounC2
/ˌbaɪəʊˈprɒspektɪŋ/The search for useful products derived from biological resources, such as plants, animals, and microorganisms, especially for commercial development.
biopsy
nounverb-transitiveC1
/ˈbaɪ.ɒp.si/A medical procedure where a sample of tissue is removed from a living body for examination to determine the presence, cause, or extent of a disease, most commonly cancer.
biopsychology
nounC1
/ˌbaɪ.əʊ.saɪˈkɒl.ə.dʒi/The branch of psychology that studies the biological basis of behavior, emotions, and mental processes.
bioreactor
nounC1
/ˌbaɪ.əʊ.riˈæk.tər/A vessel or system designed to support a biologically active environment, typically for growing microorganisms, plant or animal cells, or tissues under controlled conditions.
bioreagent
nounLow (Specialist)
/ˌbaɪ.əʊ.riˈeɪ.dʒənt/A biological substance (e.g., enzyme, antibody, cell) used in a chemical reaction or diagnostic test.
bioregion
nounLow (C1+)
/ˈbaɪəʊˌriːdʒən/An area defined by natural boundaries, such as watersheds, climate, and native plant and animal communities, rather than by political borders.
bioregionalism
nounVery low
/ˌbaɪəʊriːˈdʒənəlɪz(ə)m/A political, cultural, and ecological philosophy that emphasizes organizing society and activities based on naturally defined ecological regions (bioregions) rather than political boundaries.
bioremediation
nounC1
/ˌbaɪ.əʊ.rɪˌmiː.diˈeɪ.ʃən/The use of living organisms, especially microorganisms, to break down and remove environmental pollutants from contaminated sites such as soil or water.

Showing 4541–4560 of 10030 words.