Browse by letter

English Words Starting With B

10,030 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)

bornu
nounB1 (Intermediate)
/bɔːn/The past participle of the verb 'bear', used to describe coming into existence or life, especially through birth.
bornyl acetate
nounVery Low / Technical
/ˈbɔːnɪl ˈæsɪteɪt/A chemical compound with the formula C₁₂H₂₀O₂, an ester of borneol and acetic acid.
bornyl formate
nounVery Low
/ˈbɔːnɪl ˈfɔːmeɪt/A chemical ester derived from borneol and formic acid.
borodin
nounLow
/ˈbɒr.ə.dɪn/A proper noun referring to the Russian composer Alexander Borodin (1833–1887), a member of The Five, known for works such as the opera Prince Igor and the symphonic poem In the Steppes of Central Asia.
borodino
nounC2 (Very Low Frequency)
/ˌbɒrəˈdiːnəʊ/A proper noun referring to a famous Napoleonic-era battle and the associated Russian village.
boroglyceride
nounExtremely rare / Obsolete / Technical
/ˌbɔːrəʊˈɡlɪsəraɪd/A chemical compound resulting from the reaction of boric acid with glycerol, historically used as an antiseptic.
borohydride
nounC1
/ˌbɔːrəʊˈhaɪdraɪd/A compound containing the anion BH₄⁻, where boron is bonded to hydrogen.
boron
nounLow (Specialist)
/ˈbɔː.rɒn/A brittle, dark semi-metallic chemical element (symbol B, atomic number 5) essential in plant cell walls and used in various industrial applications.
boron carbide
nounC1/C2 (Very Low Frequency; Specialist Technical Vocabulary)
/ˈbɔːrɒn ˈkɑːbaɪd/A chemical compound of boron and carbon, specifically B₄C, known for its extreme hardness.
boron hydride
nounVery Low
/ˈbɔː.rɒn ˈhaɪ.draɪd/A chemical compound composed of boron and hydrogen.
boron nitride
nounC2
/ˌbɔː.rɒn ˈnaɪ.traɪd/A binary compound of boron and nitrogen, known for its extreme hardness and high thermal conductivity.
boronia
nounLow
/bəˈrəʊnɪə/A genus of flowering shrubs native to Australia, known for their fragrant flowers.
borosilicate
nounC1-C2 (Low frequency, specialized)
/ˌbɔːrə(ʊ)ˈsɪlɪkət/A specific type of glass or glassware made primarily from silica and boron trioxide.
borosilicate glass
nounLow
/ˌbɔːrəʊˈsɪlɪkət ɡlɑːs/A type of glass made from silica and boron trioxide, known for its high resistance to thermal shock and chemical corrosion.
borosilicic acid
nounVery Low Frequency / Highly Specialised
/ˌbɔːrə(ʊ)sɪˈlɪsɪk ˈasɪd/An inorganic acid or group of acids formed by replacing hydrogen atoms in silicic acid with boron.
borotra
nounExtremely Low
/bɒˈrɒt.rə/ (hypothetical, based on spelling)A rare, obscure noun that does not exist as a standard entry in major English dictionaries, potentially a proper name or highly specialized technical term.
borough
nounB2
/ˈbʌrə/A town or district with its own local government; an administrative division of a larger city, particularly in the UK.
borough hall
nounC1
/ˈbʌr.ə hɔːl/The main administrative building of a borough (a town or district with its own local government).
borough-english
nounRare
/ˌbʌrə ˈɪŋɡlɪʃ/A historical legal custom where the youngest son inherits his father's estate, in opposition to primogeniture.
borrelia
nounLow
/bəˈrɛlɪə/A genus of spiral-shaped bacteria (spirochetes) that are transmitted to humans through tick bites, some species of which cause diseases like Lyme disease and relapsing fever.

Showing 6941–6960 of 10030 words.