| bibliography | (noun) a list of writings with time and place of publication (such as the writings of a single author or the works referred to in preparing a document etc.) | - |
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| bicameral | (adjective) composed of two legislative bodies | - |
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| (adjective) consisting of two chambers | Synonyms: two-chambered |
| bigarade | (noun) any of various common orange trees yielding sour or bitter fruit; used as grafting stock | Synonyms: bitter orange, bitter orange tree, Citrus aurantium, marmalade orange, Seville orange, sour orange |
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| bigram | (noun) a word that is written with two letters in an alphabetic writing system | - |
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| bilateral | (adjective) having two sides or parts | Synonyms: two-sided |
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| (adjective) affecting or undertaken by two parties | - |
| (adjective) having identical parts on each side of an axis | Synonyms: bilaterally symmetric, bilaterally symmetrical, isobilateral |
| bilateralism | (noun) the property of being symmetrical about a vertical plane | Synonyms: bilateral symmetry, bilaterality |
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| bilaterality | (noun) the property of being symmetrical about a vertical plane | Synonyms: bilateral symmetry, bilateralism |
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| bilaterally | (adverb) with the involvement of two parties or governments | - |
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| (adverb) so as to involve two sides or parts | - |
| binaural | (adjective) relating to or having or hearing with two ears | Synonyms: biaural |
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| binaurally | (adverb) in a binaural manner | Synonyms: in both ears, to both ears |
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| biodegradable | (adjective) capable of being decomposed by e.g. bacteria | - |
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| biodegrade | (verb) break down naturally through the action of biological agents | - |
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| biogeographic | (adjective) of or relating to or involved with biogeography | Synonyms: biogeographical |
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| biogeographical | (adjective) of or relating to or involved with biogeography | Synonyms: biogeographic |
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| biogeography | (noun) dealing with the geographical distribution of animals and plants | - |
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| biographer | (noun) someone who writes an account of a person's life | - |
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| biographic | (adjective) of or relating to or being biography | Synonyms: biographical |
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| biographical | (adjective) of or relating to or being biography | Synonyms: biographic |
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| biographism | (noun) reduction of textual meaning to authorial biography. | - |
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| biography | (noun) an account of the series of events making up a person's life | Synonyms: life, life history, life story |
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| biopiracy | (noun) biological theft; illegal collection of indigenous plants by corporations who patent them for their own use | - |
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| biquadrate | (noun) an algebraic equation or function of the fourth degree | Synonyms: biquadratic, fourth power, quartic |
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| biquadratic | (adjective) involving the fourth and no higher power of a quantity or degree | - |
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| (noun) a polynomial of the fourth degree | Synonyms: biquadratic polynomial, quartic polynomial |
| (noun) an equation of the fourth degree | Synonyms: biquadratic equation |
| (noun) an algebraic equation or function of the fourth degree | Synonyms: biquadrate, fourth power, quartic |
| biracial | (adjective) consisting of or combining two races | - |
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| biradial | (adjective) showing both bilateral and radial symmetry | - |
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| biradially | (adverb) in a biradial manner | - |
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| biramous | (adjective) resembling a fork; divided or separated into two branches | Synonyms: bifurcate, branched, forficate, fork-like, forked, pronged, prongy |
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| birdbrain | (noun) a person with confused ideas; incapable of serious thought | Synonyms: addle-head, addlehead, loon |
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| birthrate | (noun) the ratio of live births in an area to the population of that area; expressed per 1000 population per year | Synonyms: birth rate, fertility, fertility rate, natality |
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| biserrate | (adjective) having saw-like notches with the notches themselves similarly notched | - |
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| bitartrate | (noun) an acid tartrate; a hydrogen tartrate | - |
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| bladderwrack | (noun) a common rockweed used in preparing kelp and as manure | Synonyms: black rockweed, bladder fucus, Fucus vesiculosus, tang |
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| (noun) similar to and found with black rockweed | Synonyms: Ascophyllum nodosum |
| blastoporal | (adjective) of or relating to a blastopore | Synonyms: blastoporic |
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| bluegrass | (noun) a type of country music played at a rapid tempo on banjos and guitars | - |
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| (noun) any of various grasses of the genus Poa | Synonyms: blue grass |
| bologram | (noun) record or recording made by a bolometer | Synonyms: bolograph |
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| bolograph | (noun) record or recording made by a bolometer | Synonyms: bologram |
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| bolographic | (adjective) of or relating to a bolograph | - |
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| boomerang | (noun) a miscalculation that recoils on its maker | Synonyms: backfire |
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| (noun) a curved piece of wood; when properly thrown will return to thrower | Synonyms: throw stick, throwing stick |
| (verb) return to the initial position from where it came; like a boomerang | - |
| bootstrap | (noun) a strap that is looped and sewn to the top of a boot for pulling it on | - |
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| (verb) help oneself, often through improvised means | - |
| boracic | (adjective) of or relating to or derived from or containing boron | Synonyms: boric |
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| borage | (noun) an herb whose leaves are used to flavor sauces and punches; young leaves can be eaten in salads or cooked | - |
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| (noun) hairy blue-flowered European annual herb long used in herbal medicine and eaten raw as salad greens or cooked like spinach | Synonyms: Borago officinalis, tailwort |
| borate | (noun) a salt or ester of boric acid | - |
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| borated | (adjective) mixed or impregnated with borax | - |
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| borax | (noun) an ore of boron consisting of hydrated sodium borate; used as a flux or cleansing agent | - |
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| botheration | (noun) something or someone that causes trouble; a source of unhappiness | Synonyms: annoyance, bother, infliction, nuisance, pain, pain in the ass, pain in the neck |
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| (noun) the psychological state of being irritated or annoyed | Synonyms: annoyance, irritation, vexation |
| bra | (noun) an undergarment worn by women to support their breasts | Synonyms: bandeau, brassiere |
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| brabble | (verb) argue over petty things | Synonyms: bicker, niggle, pettifog, quibble, squabble |
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| brace | (noun) a structural member used to stiffen a framework | Synonyms: bracing |
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| (noun) a carpenter's tool having a crank handle for turning and a socket to hold a bit for boring | Synonyms: bitstock |
| (noun) an appliance that corrects dental irregularities | Synonyms: braces, orthodontic braces |
| (noun) a support that steadies or strengthens something else | - |
| (noun) elastic straps that hold trousers up | Synonyms: gallus, suspender |
| (noun) a rope on a square-rigged ship that is used to swing a yard about and secure it | - |
| (noun) either of two punctuation marks ({ or }) used to enclose textual material | - |
| (noun) a set of two similar things considered as a unit | Synonyms: pair |
| (noun) two items of the same kind | Synonyms: couple, couplet, distich, duad, duet, duo, dyad, pair, span, twain, twosome, yoke |
| (verb) cause to be alert and energetic | Synonyms: arouse, energise, energize, perk up, stimulate |
| (verb) support by bracing | - |
| (verb) support or hold steady and make steadfast, with or as if with a brace | Synonyms: stabilise, stabilize, steady |
| (verb) prepare (oneself), often but not necessarily for something unpleasant or difficult | Synonyms: poise |
| braced | (adjective) positioned so as to be ready for confrontation or danger | - |
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| (adjective) held up by braces or buttresses | Synonyms: buttressed |
| bracelet | (noun) jewelry worn around the wrist for decoration | Synonyms: bangle |
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| (noun) a band of cloth or leather or metal links attached to a wristwatch and wrapped around the wrist | Synonyms: watch bracelet, watchband, watchstrap, wristband |
| bracer | (noun) a tonic or restorative (especially a drink of liquor) | Synonyms: pick-me-up |
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| (noun) a protective covering for the wrist or arm that is used in archery and fencing and other sports | Synonyms: armguard |
| bracero | (noun) a Mexican laborer who worked in the United States on farms and railroads in order to ease labor shortages during World War II | - |
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| braces | (noun) an appliance that corrects dental irregularities | Synonyms: brace, orthodontic braces |
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| brachial | (adjective) of or relating to an arm | - |
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| brachiate | (adjective) having arms or armlike appendages | - |
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| (adjective) having widely spreading paired branches | - |
| (verb) swing from one hold to the next | - |
| brachiation | (noun) swinging by the arms from branch to branch | - |
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| brachiopod | (adjective) of or belonging to the phylum Brachiopoda | Synonyms: brachiopodous |
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| (noun) marine animal with bivalve shell having a pair of arms bearing tentacles for capturing food; found worldwide | Synonyms: lamp shell, lampshell |
| brachiopodous | (adjective) of or belonging to the phylum Brachiopoda | Synonyms: brachiopod |
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| brachistochrone | (noun) a curve between two points along which a body can move under gravity in a shorter time than for any other curve. | - |
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| brachium | (noun) (biology) a branching or armlike part of an animal | - |
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| brachycephalic | (adjective) having a short broad head with a cephalic index of over 80 | Synonyms: brachycranial, brachycranic |
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| (noun) an adult with a short broad head | - |
| brachycephalism | (noun) the quality of being brachycephalic | Synonyms: brachycephaly |
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| brachycephaly | (noun) the quality of being brachycephalic | Synonyms: brachycephalism |
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| brachycranial | (adjective) having a short broad head with a cephalic index of over 80 | Synonyms: brachycephalic, brachycranic |
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| brachycranic | (adjective) having a short broad head with a cephalic index of over 80 | Synonyms: brachycephalic, brachycranial |
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| brachydactylia | (noun) abnormal shortness of fingers and toes | Synonyms: brachydactyly |
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| brachydactylic | (adjective) having abnormally short finger or toes | Synonyms: brachydactylous |
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| brachydactylous | (adjective) having abnormally short finger or toes | Synonyms: brachydactylic |
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| brachydactyly | (noun) abnormal shortness of fingers and toes | Synonyms: brachydactylia |
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| brachypterous | (adjective) (especially of certain insects) having very short or rudimentary wings | Synonyms: short-winged |
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| brachyuran | (noun) typical crabs | - |
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| brachyurous | (adjective) of or belonging to the suborder Brachyura | - |
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| bracing | (adjective) imparting vitality and energy | Synonyms: brisk, fresh, refreshful, refreshing, tonic |
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| (noun) a structural member used to stiffen a framework | Synonyms: brace |
| bracken | (noun) large coarse fern often several feet high; essentially weed ferns; cosmopolitan | Synonyms: brake, pasture brake, Pteridium aquilinum |
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| (noun) fern of southeastern Asia; not hardy in cold temperate regions | Synonyms: Pteridium esculentum |
| bracket | (noun) a support projecting from a wall (as to hold a shelf) | Synonyms: wall bracket |
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| (noun) either of two punctuation marks ([ or ]) used to enclose textual material | Synonyms: square bracket |
| (noun) either of two punctuation marks (`<' or `>') used in computer programming and sometimes used to enclose textual material | Synonyms: angle bracket |
| (noun) a category falling within certain defined limits | - |
| (verb) classify or group | - |
| (verb) place into brackets | Synonyms: bracket out |
| (verb) support with brackets | - |
| brackish | (adjective) slightly salty (especially from containing a mixture of seawater and fresh water) | Synonyms: briny |
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| (adjective) distasteful and unpleasant; spoiled by mixture | - |
| brackishness | (noun) the quality of being salty, as the saltiness of water | - |
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| bract | (noun) a modified leaf or leaflike part just below and protecting an inflorescence | - |
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| bracteal | (adjective) pertaining to or resembling or functioning as a bract | - |
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| bracteate | (adjective) having bracts | Synonyms: bracted |
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| bracted | (adjective) having bracts | Synonyms: bracteate |
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| bracteolate | (adjective) having bracteoles | - |
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| bracteole | (noun) a small bract | Synonyms: bractlet |
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| bractlet | (noun) a small bract | Synonyms: bracteole |
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| brad | (noun) a small nail | - |
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| (verb) fasten with brads | - |
| bradawl | (noun) an awl for making small holes for brads or small screws | Synonyms: pricker |
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| bradycardia | (noun) abnormally slow heartbeat | - |
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| brae | (noun) a slope or hillside | - |
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| brag | (adjective) exceptionally good | Synonyms: boss |
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| (noun) an instance of boastful talk | Synonyms: bragging, crow, crowing, gasconade, line-shooting, vaporing |
| (verb) show off | Synonyms: blow, bluster, boast, gas, gasconade, shoot a line, swash, tout, vaunt |
| braggadocio | (noun) vain and empty boasting | Synonyms: bluster, rhodomontade, rodomontade |
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| braggart | (adjective) exhibiting self-importance | Synonyms: big, boastful, bragging, braggy, cock-a-hoop, crowing, self-aggrandising, self-aggrandizing |
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| (noun) a very boastful and talkative person | Synonyms: blowhard, boaster, bragger, line-shooter, vaunter |
| bragger | (noun) a very boastful and talkative person | Synonyms: blowhard, boaster, braggart, line-shooter, vaunter |
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| bragging | (adjective) exhibiting self-importance | Synonyms: big, boastful, braggart, braggy, cock-a-hoop, crowing, self-aggrandising, self-aggrandizing |
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| (noun) an instance of boastful talk | Synonyms: brag, crow, crowing, gasconade, line-shooting, vaporing |
| braggy | (adjective) exhibiting self-importance | Synonyms: big, boastful, braggart, bragging, cock-a-hoop, crowing, self-aggrandising, self-aggrandizing |
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| brahman | (noun) the highest of the four varnas: the priestly or sacerdotal category | Synonyms: brahmin |
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| (noun) a member of the highest of the four Hindu varnas | Synonyms: brahmin |
| (noun) a member of a social and cultural elite (especially a descendant of an old New England family) | Synonyms: brahmin |
| brahmin | (noun) the highest of the four varnas: the priestly or sacerdotal category | Synonyms: brahman |
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| (noun) a member of the highest of the four Hindu varnas | Synonyms: brahman |
| (noun) a member of a social and cultural elite (especially a descendant of an old New England family) | Synonyms: brahman |
| brahminic | (adjective) of or relating to or characteristic of a brahmin | Synonyms: brahminical |
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| brahminical | (adjective) of or relating to or characteristic of a brahmin | Synonyms: brahminic |
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| braid | (noun) trimming used to decorate clothes or curtains | Synonyms: braiding, gold braid |
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| (noun) a hairdo formed by braiding or twisting the hair | Synonyms: plait, tress, twist |
| (verb) form or weave into a braid or braids | Synonyms: pleach |
| (verb) decorate with braids or ribbons | - |
| (verb) make by braiding or interlacing | Synonyms: lace, plait |
| braided | (adjective) woven by (or as if by) braiding | - |
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