| ARCHAEOPTERYXES | • archaeopteryxes n. Plural of archaeopteryx. • ARCHAEOPTERYX n. a Jurassic fossil bird of the Archaeopteryx genus, with a long bony tail, sharp-toothed jaws, and wings bearing three clawed digits.
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| DAGUERREOTYPERS | • daguerreotypers n. Plural of daguerreotyper. • DAGUERREOTYPER n. one who develops daguerreotypes, also DAGUERREOTYPIST.
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| DAGUERREOTYPIES | • DAGUERREOTYPY n. the art of daguerreotyping. | 
| ELECTROANALYSES | • electroanalyses n. Plural of electroanalysis. • ELECTROANALYSIS n. electrochemical analysis.
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| ELECTRODIALYSES | • electrodialyses n. Plural of electrodialysis. • ELECTRODIALYSIS n. the use of an electric field to speed up membranal diffusion.
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| HAEMACYTOMETERS | • haemacytometers n. Plural of haemacytometer. • HAEMACYTOMETER n. an apparatus for counting the number of cells in a quantity of blood, typically consisting of a graduated pipette for drawing and diluting, also HEMACYTOMETER.
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| HAEMOCYTOMETERS | • haemocytometers n. Plural of haemocytometer. • HAEMOCYTOMETER n. an apparatus for counting the number of cells in a quantity of blood, typically consisting of a graduated pipette for drawing and diluting, also HEMOCYTOMETER.
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| HETEROSEXUALITY | • heterosexuality n. The state of being sexually and romantically attracted primarily or exclusively to persons of the opposite sex. • heterosexuality n. Sexual activity with a person of the opposite sex.
 • HETEROSEXUALITY n. the state of being heterosexual.
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| HYPERAESTHESIAS | • hyperaesthesias n. Plural of hyperaesthesia. • HYPERAESTHESIA n. excessive sensitivity, also HYPERESTHESIA.
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| HYPERVENTILATES | • hyperventilates v. Third-person singular simple present indicative form of hyperventilate. • HYPERVENTILATE v. to breathe rapidly and deeply.
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| PRESBYTERIANISE | • PRESBYTERIANISE v. to make presbyterian, also PRESBYTERIANIZE. | 
| PRESBYTERIANIZE | • Presbyterianize v. (Transitive) To make Presbyterian. • PRESBYTERIANIZE v. to make presbyterian, also PRESBYTERIANISE.
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| PYRETOTHERAPIES | • PYRETOTHERAPY n. medical treatment by causing fever. | 
| SESQUICENTENARY | • sesquicentenary n. A 150-year anniversary. • SESQUICENTENARY n. a hundred and fiftieth anniversary.
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| TETRAETHYLLEADS | • tetraethyl␣leads n. Plural of tetraethyl lead. • TETRAETHYLLEAD n. a colourless oily insoluble liquid formerly used in petrol to prevent knocking.
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