| abdominoplasty | (noun) cosmetic surgery of the abdomen to remove wrinkles and tighten the skin over the stomach | Synonyms: tummy tuck |
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| achondroplasia | (noun) an inherited skeletal disorder beginning before birth; cartilage is converted to bone resulting in dwarfism | Synonyms: achondroplasty, chondrodystrophy, osteosclerosis congenita |
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| achondroplastic | (adjective) of or relating to achondroplasia | - |
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| achondroplasty | (noun) an inherited skeletal disorder beginning before birth; cartilage is converted to bone resulting in dwarfism | Synonyms: achondroplasia, chondrodystrophy, osteosclerosis congenita |
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| alas | (adverb) by bad luck | Synonyms: regrettably, unfortunately, unluckily |
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| alastrim | (noun) a mild form of smallpox caused by a less virulent form of the virus | Synonyms: Cuban itch, Kaffir pox, milk pox, pseudosmallpox, pseudovariola, variola minor, West Indian smallpox, white pox |
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| ameloblast | (noun) a cell from which tooth enamel develops | - |
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| aminoplast | (noun) a plastic (synthetic resin) made from amino compounds; used as an adhesive and as a coating for paper and textiles | Synonyms: amino plastic, amino resin |
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| amylase | (noun) any of a group of proteins found in saliva and pancreatic juice and parts of plants; help convert starch to sugar | - |
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| anaplasia | (noun) loss of structural differentiation within a cell or group of cells often with increased capacity for multiplication, as in a malignant tumor | - |
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| anaplasmosis | (noun) a disease of cattle that is transmitted by cattle ticks; similar to Texas fever | - |
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| anaplastic | (adjective) of or relating to anaplasia | - |
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| anaplasty | (noun) surgery concerned with therapeutic or cosmetic reformation of tissue | Synonyms: plastic surgery, reconstructive surgery |
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| angioplasty | (noun) an operation to repair a damaged blood vessel or unblock a coronary artery | - |
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| antineoplastic | (adjective) used in the treatment of cancer | Synonyms: anticancer, antitumor, antitumour |
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| (noun) any of several drugs that control or kill neoplastic cells; used in chemotherapy to kill cancer cells; all have unpleasant side effects that may include nausea and vomiting and hair loss and suppression of bone marrow function | Synonyms: antineoplastic drug, cancer drug |
| aplasia | (noun) failure of some tissue or organ to develop | - |
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| arthroplasty | (noun) surgical reconstruction or replacement of a malformed or degenerated joint | - |
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| atlas | (noun) a figure of a man used as a supporting column | Synonyms: telamon |
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| (noun) the 1st cervical vertebra | Synonyms: atlas vertebra |
| (noun) a collection of maps in book form | Synonyms: book of maps, map collection |
| autoplastic | (adjective) of or relating to or involved in autoplasty | - |
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| autoplasty | (noun) surgical repair by using tissue from another part of the patient's own body | - |
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| (noun) tissue that is taken from one site and grafted to another site on the same person | Synonyms: autograft |
| backblast | (noun) backfire from a recoilless weapon | Synonyms: back-blast |
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| backlash | (noun) an adverse reaction to some political or social occurrence | - |
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| (noun) a movement back from an impact | Synonyms: rebound, recoil, repercussion |
| (verb) come back to the originator of an action with an undesired effect | Synonyms: backfire, recoil |
| balas | (noun) a pale rose-colored variety of the ruby spinel | Synonyms: balas ruby |
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| ballast | (noun) any heavy material used to stabilize a ship or airship | - |
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| (noun) an electrical device for starting and regulating fluorescent and discharge lamps | Synonyms: light ballast |
| (noun) a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations) | Synonyms: ballast resistor, barretter |
| (noun) an attribute that tends to give stability in character and morals; something that steadies the mind or feelings | - |
| (noun) coarse gravel laid to form a bed for streets and railroads | - |
| (verb) make steady with a ballast | - |
| beplaster | (verb) cover conspicuously or thickly, as by pasting something on | Synonyms: plaster |
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| blase | (adjective) very sophisticated especially because of surfeit; versed in the ways of the world | Synonyms: worldly |
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| (adjective) nonchalantly unconcerned | - |
| (adjective) uninterested because of frequent exposure or indulgence | Synonyms: bored |
| blaspheme | (verb) utter obscenities or profanities | Synonyms: curse, cuss, imprecate, swear |
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| (verb) speak of in an irreverent or impious manner | - |
| blasphemer | (noun) a person who speaks disrespectfully of sacred things | - |
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| blasphemous | (adjective) characterized by profanity or cursing | Synonyms: blue, profane |
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| (adjective) grossly irreverent toward what is held to be sacred | Synonyms: profane, sacrilegious |
| blasphemously | (adverb) in a blasphemous manner | - |
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| blasphemy | (noun) blasphemous behavior; the act of depriving something of its sacred character | Synonyms: desecration, profanation, sacrilege |
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| (noun) blasphemous language (expressing disrespect for God or for something sacred) | - |
| blast | (noun) a very long fly ball | - |
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| (noun) intense adverse criticism | Synonyms: attack, fire, flack, flak |
| (noun) an explosion (as of dynamite) | - |
| (noun) a sudden very loud noise | Synonyms: bam, bang, clap, eruption |
| (noun) a highly pleasurable or exciting experience | Synonyms: good time |
| (noun) a strong current of air | Synonyms: blow, gust |
| (verb) shatter as if by explosion | Synonyms: knock down |
| (verb) shrivel or wither or mature imperfectly | - |
| (verb) criticize harshly or violently | Synonyms: crucify, pillory, savage |
| (verb) use explosives on | Synonyms: shell |
| (verb) fire a shot; release | Synonyms: shoot |
| (verb) hit with great force | Synonyms: boom, nail, smash |
| (verb) create by using explosives | Synonyms: shell |
| (verb) make with or as if with an explosion | - |
| (verb) apply a draft or strong wind to to | - |
| (verb) make a strident sound | Synonyms: blare |
| blasted | (adjective) expletives used informally as intensifiers | Synonyms: blame, blamed, blessed, damn, damned, darned, deuced, goddam, goddamn, goddamned, infernal |
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| blastema | (noun) a mass of undifferentiated cells from which an organ or body part develops | - |
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| blastemal | (adjective) of or relating to blastemata | Synonyms: blastematic, blastemic |
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| blastematic | (adjective) of or relating to blastemata | Synonyms: blastemal, blastemic |
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| blastemic | (adjective) of or relating to blastemata | Synonyms: blastemal, blastematic |
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| blaster | (noun) a workman employed to blast with explosives | Synonyms: chargeman |
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| blasting | (adjective) causing injury or blight; especially affecting with sudden violence or plague or ruin | Synonyms: ruinous |
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| (adjective) unpleasantly loud and penetrating | Synonyms: blaring |
| blastocele | (noun) the fluid-filled cavity inside a blastula | Synonyms: blastocoel, blastocoele, cleavage cavity, segmentation cavity |
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| blastocoel | (noun) the fluid-filled cavity inside a blastula | Synonyms: blastocele, blastocoele, cleavage cavity, segmentation cavity |
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| blastocoele | (noun) the fluid-filled cavity inside a blastula | Synonyms: blastocele, blastocoel, cleavage cavity, segmentation cavity |
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| blastocoelic | (adjective) of or relating to a segmentation cavity | - |
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| blastocyst | (noun) the blastula of a placental mammal in which some differentiation of cells has occurred | Synonyms: blastodermic vessicle |
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| blastocyte | (noun) an undifferentiated embryonic cell | - |
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| blastocytoma | (noun) a tumor composed of immature undifferentiated cells | Synonyms: blastoma, embryonal carcinosarcoma |
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| blastoderm | (noun) a layer of cells on the inside of the blastula | Synonyms: blastodisc, germinal area, germinal disc |
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| blastodermatic | (adjective) of or relating to a blastoderm | Synonyms: blastodermic |
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| blastodermic | (adjective) of or relating to a blastoderm | Synonyms: blastodermatic |
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| blastodisc | (noun) a layer of cells on the inside of the blastula | Synonyms: blastoderm, germinal area, germinal disc |
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| blastoff | (noun) the launching of a missile or spacecraft to a specified destination | Synonyms: shot |
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| blastogenesis | (noun) theory that inherited characteristics are transmitted by germ plasm | - |
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| (noun) asexual reproduction by budding | - |
| blastogenetic | (adjective) of or relating to blastogenesis | - |
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| blastoma | (noun) a tumor composed of immature undifferentiated cells | Synonyms: blastocytoma, embryonal carcinosarcoma |
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| blastomere | (noun) any cell resulting from cleavage of a fertilized egg | - |
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| blastomeric | (adjective) of or relating to a blastomere | - |
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| blastomycete | (noun) any of various yeastlike budding fungi of the genus Blastomyces; cause disease in humans and other animals | - |
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| blastomycosis | (noun) any of several infections of the skin or mucous membrane caused by Blastomyces | - |
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| blastomycotic | (adjective) of or relating to or characteristic of blastomycosis | - |
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| blastoporal | (adjective) of or relating to a blastopore | Synonyms: blastoporic |
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| blastopore | (noun) the opening into the archenteron | - |
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| blastoporic | (adjective) of or relating to a blastopore | Synonyms: blastoporal |
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| blastosphere | (noun) early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs | Synonyms: blastula |
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| blastospheric | (adjective) of or relating to a blastula | Synonyms: blastular |
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| blastula | (noun) early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs | Synonyms: blastosphere |
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| blastular | (adjective) of or relating to a blastula | Synonyms: blastospheric |
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| calash | (noun) the folding hood of a horse-drawn carriage | Synonyms: calash top, caleche |
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| (noun) a woman's large folded hooped hood; worn in the 18th century | Synonyms: caleche |
| catalase | (noun) enzyme found in most plant and animal cells that functions as an oxidative catalyst; decomposes hydrogen peroxide into oxygen and water | - |
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| cataplasia | (noun) (biology) degenerative reversion of cells or tissue to a less differentiated or more primitive form | - |
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| cataplasm | (noun) a medical dressing consisting of a soft heated mass of meal or clay that is spread on a cloth and applied to the skin to treat inflamed areas or improve circulation etc. | Synonyms: plaster, poultice |
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| cataplastic | (adjective) of or relating to cataplasia | - |
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| cephalaspid | (noun) extinct jawless fish of the Devonian with armored head | Synonyms: osteostracan |
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| ceroplastics | (noun) the art of modeling in wax. | - |
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| chloroplast | (noun) plastid containing chlorophyll and other pigments; in plants that carry out photosynthesis | - |
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| chromoblastomycosis | (noun) a fungal infection characterized by itchy warty nodules on the skin | - |
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| chromoplast | (noun) plastid containing pigments other than chlorophyll usually yellow or orange carotenoids | - |
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| clash | (noun) a minor short-term fight | Synonyms: brush, encounter, skirmish |
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| (noun) a loud resonant repeating noise | Synonyms: clang, clangor, clangoring, clangour, clank, crash |
| (noun) a state of conflict between persons | Synonyms: friction |
| (noun) a state of conflict between colors | - |
| (verb) disagree violently | - |
| (verb) crash together with violent impact | Synonyms: collide |
| (verb) be incompatible; be or come into conflict | Synonyms: collide, jar |
| clashing | (adjective) sharply and harshly discordant | - |
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| clasp | (noun) the act of grasping | Synonyms: clench, clutch, clutches, grasp, grip, hold |
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| (noun) a fastener (as a buckle or hook) that is used to hold two things together | - |
| (verb) hold firmly and tightly | - |
| (verb) grasp firmly | - |
| (verb) fasten with a buckle or buckles | Synonyms: buckle |
| (verb) fasten with or as if with a brooch | Synonyms: brooch |
| class | (noun) education imparted in a series of lessons or meetings | Synonyms: course, course of instruction, course of study |
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| (noun) elegance in dress or behavior | - |
| (noun) a collection of things sharing a common attribute | Synonyms: category, family |
| (noun) people having the same social, economic, or educational status | Synonyms: social class, socio-economic class, stratum |
| (noun) (biology) a taxonomic group containing one or more orders | - |
| (noun) a body of students who are taught together | Synonyms: course, form, grade |
| (noun) a body of students who graduate together | Synonyms: year |
| (noun) a league ranked by quality | Synonyms: division |
| (verb) arrange or order by classes or categories | Synonyms: assort, classify, separate, sort, sort out |
| classic | (adjective) of or relating to the first significant period of a civilization, culture, area of study, etc. | Synonyms: classical |
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| (adjective) considered of the highest quality and lasting significance or worth | - |
| (adjective) well-known and long-established in form or style | Synonyms: classical |
| (adjective) of a well-known type; remarkably typical | - |
| (noun) a creation of the highest excellence | - |
| (noun) an artist who has created classic works | - |
| classical | (adjective) of or relating to the first significant period of a civilization, culture, area of study, etc. | Synonyms: classic |
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| (adjective) of or relating to the study of the literary works of ancient Greece and Rome | - |
| (adjective) of or relating to the languages used by ancient standard authors | - |
| (adjective) well-known and long-established in form or style | Synonyms: classic |
| (adjective) of or pertaining to or characteristic of the ancient Greeks and Romans, especially their art, literature, or culture | Synonyms: Graeco-Roman, Greco-Roman |
| (adjective) of or relating to music in the European tradition, such as symphonies and operas | - |
| (adjective) (physics) relating to or based on concepts that preceded the theories of relativity and quantum mechanics | - |
| (noun) traditional genre of music conforming to an established form and appealing to critical interest and developed musical taste | Synonyms: classical music, serious music |
| classicalism | (noun) a movement in literature and art during the 17th and 18th centuries in Europe that favored rationality and restraint and strict forms | Synonyms: classicism |
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| classically | (adverb) in the manner of Greek and Roman culture | - |
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| classicise | (verb) make classic or classical | Synonyms: classicize |
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| classicism | (noun) a movement in literature and art during the 17th and 18th centuries in Europe that favored rationality and restraint and strict forms | Synonyms: classicalism |
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| classicist | (noun) an artistic person who adheres to classicism | - |
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| (noun) a student of ancient Greek and Latin | Synonyms: classical scholar |
| classicistic | (adjective) of or relating to classicism | - |
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| classicize | (verb) make classic or classical | Synonyms: classicise |
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| classics | (noun) study of the literary works of ancient Greece and Rome | - |
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| classifiable | (adjective) capable of being classified | Synonyms: distinctive |
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| classification | (noun) the act of distributing things into classes or categories of the same type | Synonyms: assortment, categorisation, categorization, compartmentalisation, compartmentalization |
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| (noun) restriction imposed by the government on documents or weapons that are available only to certain authorized people | - |
| (noun) the basic cognitive process of arranging into classes or categories | Synonyms: categorisation, categorization, sorting |
| (noun) a group of people or things arranged by class or category | Synonyms: categorisation, categorization |
| classificatory | (adjective) relating to or involving classification | - |
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| classified | (adjective) arranged into classes | - |
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| (adjective) official classification of information or documents; withheld from general circulation | - |
| (noun) a short ad in a newspaper or magazine (usually in small print) and appearing along with other ads of the same type | Synonyms: classified ad, classified advertisement |
| classifier | (noun) an algorithm that implements classification. | - |
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| (noun) a word or morpheme used in some languages in certain contexts (such as counting) to indicate the semantic class to which the counted item belongs | - |
| (noun) a person who creates classifications | - |
| classify | (verb) arrange or order by classes or categories | Synonyms: assort, class, separate, sort, sort out |
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| (verb) assign to a class or kind | Synonyms: relegate |
| (verb) declare unavailable, as for security reasons | - |
| classless | (adjective) favoring social equality | Synonyms: egalitarian |
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| classmate | (noun) an acquaintance that you go to school with | Synonyms: class fellow, schoolfellow, schoolmate |
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| classroom | (noun) a room in a school where lessons take place | Synonyms: schoolroom |
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| classwork | (noun) the part of a student's work that is done in the classroom | - |
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