| chamaeleon | (noun) lizard of Africa and Madagascar able to change skin color and having a projectile tongue | Synonyms: chameleon |
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| chameleon | (noun) lizard of Africa and Madagascar able to change skin color and having a projectile tongue | Synonyms: chamaeleon |
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| (noun) a changeable or inconstant person | - |
| cleome | (noun) any of various often strong-smelling plants of the genus Cleome having showy spider-shaped flowers | Synonyms: spiderflower |
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| deoxynucleotide | (noun) Any nucleotide that contains a deoxy sugar. | - |
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| galleon | (noun) a large square-rigged sailing ship with three or more masts; used by the Spanish for commerce and war from the 15th to 18th centuries | - |
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| ileostomy | (noun) surgical procedure that creates an opening from the ileum through the abdominal wall to function as an anus; performed in cases of cancer of the colon or ulcerative colitis | - |
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| leoncita | (noun) small South American marmoset with silky fur and long nonprehensile tail | Synonyms: lion marmoset, lion monkey, tamarin |
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| leone | (noun) the basic unit of money in Sierra Leone; equal to 100 cents | - |
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| leonine | (adjective) of or characteristic of or resembling a lion | - |
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| leopard | (noun) large feline of African and Asian forests usually having a tawny coat with black spots | Synonyms: Panthera pardus |
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| (noun) the pelt of a leopard | - |
| leopardbane | (noun) any of several herbs of the genus Doronicum having alternate often clasping stem leaves cultivated for their long stalks of yellow flower heads | Synonyms: leopard's-bane |
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| leopardess | (noun) female leopard | - |
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| leotard | (noun) a tight-fitting garment of stretchy material that covers the body from the shoulders to the thighs (and may have long sleeves or legs reaching down to the ankles); worn by ballet dancers and acrobats for practice or performance | Synonyms: body suit, cat suit, unitard |
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| leotards | (noun) skintight knit hose covering the body from the waist to the feet worn by acrobats and dancers and as stockings by women and girls | Synonyms: tights |
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| maleo | (noun) Celebes megapode that lays eggs in holes in sandy beaches | Synonyms: Macrocephalon maleo |
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| micropaleontology | (noun) the paleontology of microfossils | - |
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| mileometer | (noun) a meter that shows mileage traversed | Synonyms: hodometer, milometer, odometer |
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| mononucleosis | (noun) an acute disease characterized by fever and swollen lymph nodes and an abnormal increase of mononuclear leucocytes or monocytes in the bloodstream; not highly contagious; some believe it can be transmitted by kissing | Synonyms: glandular fever, infectious mononucleosis, kissing disease, mono |
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| napoleon | (noun) a rectangular piece of pastry with thin flaky layers and filled with custard cream | - |
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| napoleoniana | (noun) items related to the life of Napoleon (engravings, paintings, books, etc.). | - |
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| nucleole | (noun) a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis | Synonyms: nucleolus |
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| nucleolus | (noun) a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis | Synonyms: nucleole |
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| nucleon | (noun) a constituent (proton or neutron) of an atomic nucleus | - |
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| nucleonics | (noun) the branch of physics that studies the internal structure of atomic nuclei | Synonyms: atomic physics, nuclear physics |
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| nucleoplasm | (noun) the protoplasm that constitutes the nucleus of a cell | Synonyms: karyoplasm |
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| nucleoprotein | (noun) any of several substances found in the nuclei of all living cells; consists of a protein bound to a nucleic acid | - |
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| nucleoside | (noun) a glycoside formed by partial hydrolysis of a nucleic acid | - |
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| nucleosynthesis | (noun) (astronomy) the cosmic synthesis of atoms more complex than the hydrogen atom | - |
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| nucleotide | (noun) a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA) | Synonyms: base |
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| oleo | (noun) a spread made chiefly from vegetable oils and used as a substitute for butter | Synonyms: margarin, margarine, marge, oleomargarine |
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| oleography | (noun) the art or process of producing chromolithographs printed on cloth to imitate an oil painting. | - |
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| oleomargarine | (noun) a spread made chiefly from vegetable oils and used as a substitute for butter | Synonyms: margarin, margarine, marge, oleo |
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| oleophilic | (adjective) having a strong affinity for oils rather than water | - |
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| oleophobic | (adjective) lacking affinity for oils | - |
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| oleoresin | (noun) a naturally occurring mixture of a resin and an essential oil; obtained from certain plants | - |
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| oligonucleotide | (noun) (biochemistry) a polynucleotide whose molecules contain relatively few nucleotides | Synonyms: oligo |
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| paleoanthropological | (adjective) of or concerned with the scientific study of human fossils | - |
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| paleoanthropology | (noun) the scientific study of human fossils | Synonyms: human palaeontology, human paleontology, palaeoanthropology |
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| paleobiology | (noun) a branch of paleontology that deals with the origin and growth and structure of fossil animals and plants as living organisms | Synonyms: palaeobiology |
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| paleobotany | (noun) the study of fossil plants | Synonyms: palaeobotany |
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| paleocerebellum | (noun) the anterior lobe of the cerebellum which was one of the earliest parts of the hindbrain to develop in mammals | - |
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| paleoclimatology | (noun) the study of the climate of past ages | Synonyms: palaeoclimatology |
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| paleocortex | (noun) the olfactory cortex of the cerebrum | Synonyms: archipallium |
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| paleocortical | (adjective) of or relating to the olfactory cortex of the cerebrum | - |
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| paleodendrology | (noun) the branch of paleobotany that studies fossil trees | Synonyms: palaeodendrology |
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| paleoecology | (noun) the branch of ecology that studies ancient ecology | Synonyms: palaeoecology |
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| paleoencephalon | (noun) the more primitive parts of the brain phylogenetically; most structures other than the cerebral cortex | Synonyms: palaeencephalon, paleencephalon |
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| paleoethnography | (noun) the ethnography of paleolithic humans | Synonyms: palaeoethnography |
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| paleogeography | (noun) the study of the geography of ancient times or ancient epochs | Synonyms: palaeogeography |
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| paleogeology | (noun) the study of geologic features once at the surface of the earth but now buried beneath rocks | Synonyms: palaeogeology |
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| paleographer | (noun) an archeologist skilled in paleography | Synonyms: paleographist |
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| paleographist | (noun) an archeologist skilled in paleography | Synonyms: paleographer |
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| paleography | (noun) the study of ancient forms of writing (and the deciphering of them) | - |
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| paleolith | (noun) a stone tool from the Paleolithic age | - |
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| paleolithic | (adjective) of or relating to the second period of the Stone Age (following the eolithic) | Synonyms: palaeolithic |
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| paleology | (noun) the study of (especially prehistoric) antiquities | Synonyms: palaeology |
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| paleomammalogy | (noun) the paleobiology of ancient mammals | - |
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| paleontological | (adjective) of or relating to paleontology | Synonyms: palaeontological |
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| paleontologist | (noun) a specialist in paleontology | Synonyms: fossilist, palaeontologist |
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| paleontology | (noun) the earth science that studies fossil organisms and related remains | Synonyms: fossilology, palaeontology |
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| paleopathology | (noun) the study of disease of former times (as inferred from fossil evidence) | Synonyms: palaeopathology |
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| paleornithology | (noun) the paleobiology of birds | Synonyms: palaeornithology |
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| paleostriatum | (noun) the inner pale yellow part of the lenticular nucleus | Synonyms: globus pallidus, pallidum |
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| paleozoology | (noun) the study of fossil animals | Synonyms: palaeozoology |
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| pleochroic | (adjective) of or relating to or having pleochroism | - |
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| pleochroism | (noun) the phenomenon of different colors appearing when certain crystals are viewed from different directions | - |
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| pleomorphic | (adjective) relating to or characterized by pleomorphism | - |
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| pleomorphism | (noun) (biology) the appearance of two or more distinctly different forms in the life cycle of some organisms | - |
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| (noun) (chemistry) the existence of different kinds of crystal of the same chemical compound | Synonyms: polymorphism |
| pleonasm | (noun) using more words than necessary | - |
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| pleonaste | (noun) a dark-colored spinel containing iron | Synonyms: ceylonite |
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| pleonastic | (adjective) repetition of same and identical sense with different and non-identical words | Synonyms: redundant, tautologic, tautological |
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| pleopod | (noun) one of the paired abdominal appendages of certain aquatic crustaceans that function primarily for carrying the eggs in females and are usually adapted for swimming | Synonyms: swimmeret |
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| polynucleotide | (noun) (biochemistry) a linear polymer whose molecule is composed of many nucleotide units constituting a section of a nucleic acid molecule | - |
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| simoleons | (noun) informal terms for money | Synonyms: boodle, bread, cabbage, clams, dinero, dough, gelt, kale, lettuce, lolly, loot, lucre, moolah, pelf, scratch, shekels, sugar, wampum |
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| speleologist | (noun) a person who explores caves | Synonyms: potholer, spelaeologist, spelunker |
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| speleology | (noun) the pastime of exploring caves | Synonyms: spelaeology |
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| (noun) the scientific study of caves | Synonyms: spelaeology |
| teleological | (adjective) of or relating to teleology | - |
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| teleologist | (noun) advocate of teleology | - |
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| teleology | (noun) (philosophy) a doctrine explaining phenomena by their ends or purposes | - |
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| teleost | (noun) a bony fish of the subclass Teleostei | Synonyms: teleost fish, teleostan |
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| teleostan | (noun) a bony fish of the subclass Teleostei | Synonyms: teleost, teleost fish |
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