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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)

bibliotics
nounRare / Technical
/ˌbɪbliˈɒtɪks/The scientific analysis of handwriting, especially for authentication or identification in the context of documents.
biblist
nounC2 (Very Low Frequency)
/ˈbɪblɪst/A person who is deeply knowledgeable about or committed to the Bible.
bicarb
nounB1
/ˈbaɪ.kɑːb/An informal short form for sodium bicarbonate (NaHCO₃), a white crystalline compound used as a raising agent in baking, an antacid, and for cleaning.
bicarbonate
nounC1
/ˌbaɪˈkɑː.bən.ət/A chemical compound containing the HCO₃⁻ ion; commonly sodium bicarbonate (baking soda), used as a leavening agent and antacid.
bicarbonate of soda
nounMedium
/ˌbaɪˈkɑː.bən.ət əv ˈsəʊ.də/A white crystalline powder (NaHCO₃) used as a leavening agent in baking and as an antacid.
bice
nounExtremely Rare / Archaic
/baɪs/A blue or green pigment made from basic copper carbonate.
bice blue
nounRare/Technical
/baɪs bluː/A moderate blue pigment or color, originally made from azurite mineral.
bice green
nounObsolete / Historical / Very Low Frequency
/baɪs/A pale blue or green pigment derived from certain copper ores, particularly malachite (green bice) or azurite (blue bice). Historically used in painting and illumination.
bicentenary
adjectivenounLow frequency
/ˌbaɪ.senˈtiː.nər.i/The two-hundredth anniversary of an event.
bicentennial
adjectivenounC1
/ˌbaɪ.senˈten.i.əl/Relating to a 200th anniversary or its celebration.
bicep
nounMedium
/ˈbaɪ.seps/A muscle in the upper arm that bends the elbow and rotates the forearm.
biceps
nounB1
/ˈbaɪ.seps/A large muscle at the front of the upper arm, responsible for flexing the elbow.
biceps brachii
nounC2
/ˌbaɪ.seps ˈbreɪ.ki.aɪ/The large muscle at the front of the upper arm, primarily responsible for flexing the elbow.
biceps femoris
nounVery Low / Technical
/ˌbʌɪsɛps ˈfɛm(ə)rɪs/A specific two-headed muscle at the back of the thigh, part of the hamstring group.
bichat
nounLow (C2 Level / Professional)
/ˈbiːʃɑː/A proper noun, specifically the surname of the French anatomist and physiologist Marie François Xavier Bichat (1771–1802). The word is almost exclusively used in reference to him, his anatomical discoveries, or medical eponyms derived from his name.
biche-la-mar
nounVery Low
/ˌbiːʃ lə ˈmɑː/A pidgin language or simplified lingua franca based on English, historically used for trade and communication in parts of the southwestern Pacific (especially Vanuatu and the Solomon Islands), also known as Beach-la-Mar or Sandalwood English.
bichir
nounLow (C2+ / Rare)
/ˈbɪtʃɪə(r)/Any of several species of primitive, elongated freshwater fish belonging to the family Polypteridae, native to Africa.
bichloride
nounRare
/ˌbʌɪˈklɔːrʌɪd/A chemical compound containing two atoms of chlorine combined with another element or radical.
bichloride of mercury
nounVery Low
/ˌbaɪˈklɔːraɪd əv ˈmɜːkjəri/A highly poisonous, white crystalline compound of mercury and chlorine, historically used as an antiseptic and disinfectant.
bichon frise
nounC1
/ˈbiːʃɒ̃ ˈfriːzeɪ/A breed of small, fluffy, white dog with a distinctive soft, curly coat and a lively, affectionate temperament.

Showing 3961–3980 of 10030 words.