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)

binocle
nounRare
/ˈbɪn.ə.kəl/A pair of small telescopes mounted side-by-side and used for viewing distant objects; binoculars.
binocular
adjectivenounC1
/bɪˈnɒk.jə.lər/Relating to, involving, or designed for the use of both eyes simultaneously.
binocular disparity
nounLow/Very Low (C2)
/bɪˈnɒkjʊlə dɪˈspærɪti/The slight difference in the images projected onto each retina from a single object, due to the horizontal separation of the eyes.
binocular rivalry
nounVery Low (C2/Academic)
/bɪˌnɒk.jə.lə ˈraɪ.vəl.ri/A phenomenon in visual perception where different images are presented to each eye, and the brain alternates between perceiving one image and the other, rather than fusing them into a single stable view.
binoculars
plural-nounC1
/bɪˈnɒk.jə.ləz/A hand-held optical device consisting of two small telescopes mounted side by side, used to view distant objects with both eyes.
binomial
adjectivenounC1
/baɪˈnəʊ.mi.əl/A mathematical expression consisting of two terms connected by a plus or minus sign.
binomial coefficient
nounLow
/baɪˌnəʊ.mi.əl ˈkəʊ.ɪ.fɪʃ.ənt/A number representing the number of ways to choose a subset of a given size from a larger set, ignoring order.
binomial distribution
nounC2
/baɪˌnəʊ.mi.əl ˌdɪs.trɪˈbjuː.ʃən/A discrete probability distribution that describes the number of successes in a fixed number of independent trials, each with the same probability of success.
binomial experiment
nounLow (Specialist)
/baɪˈnəʊ.mi.əl ɪkˈsper.ɪ.mənt/A statistical experiment that has exactly two mutually exclusive outcomes per trial, often termed 'success' and 'failure', with a fixed number of independent trials and a constant probability of success.
binomial nomenclature
nounLow (C2)
/baɪˌnəʊ.mi.əl ˈnəʊ.mən.kleɪ.tʃə(r)/The formal biological system for naming species using two Latin (or Latinised) names: the genus name (capitalised) followed by the species identifier (lowercase), both italicised.
binomial series
nounC2
/baɪˌnəʊ.mi.əl ˈsɪə.riːz/The infinite series expansion of a binomial expression (1+x)^n, valid for |x|<1, regardless of whether n is an integer.
binomial theorem
nounTechnical/Low
/baɪˌnəʊ.mi.əl ˈθɪə.rəm/A fundamental formula in algebra for expanding any power of a binomial (a two-term expression) into a sum of terms.
binominal
adjectivenounC2
/baɪˈnɒmɪn(ə)l/Having or relating to two names or terms, especially in a scientific classification system.
binormal
nounVery Low
/ˌbaɪˈnɔː.məl/In mathematics (differential geometry), a line perpendicular to both the tangent and the principal normal to a space curve at a given point.
binoxalate
nounVery Low
/ˌbaɪˈnɒksəleɪt/A salt or ester containing two oxalate groups in its molecule.
bins
plural-nounB1
/bɪnz/Containers for holding or storing things, often with a lid, typically used for waste/rubbish.
bint
nounVery low
/bɪnt/A derogatory slang term for a woman or girl.
binturong
nounVery Rare
/ˈbɪn.tjʊə.rɒŋ/A large, arboreal, nocturnal mammal native to Southeast Asia, with coarse black fur, a prehensile tail, and facial whiskers; also called a bearcat.
binuclear family
nounC2
/ˌbaɪˈnjuː.klɪ.ə ˈfæm.əl.i/A family unit formed after divorce or separation, where children divide their time between two separate parental households.
binyon
nounRare / Obsolete / Proper Noun
/ˈbɪnjən/A technical term in poetry, specifically a structured stanza of four lines.

Showing 4381–4400 of 10030 words.