| BIOSTRATIGRAPHY | • biostratigraphy n. (Biology, geology) The study of the stratigraphic distribution of fossils. • BIOSTRATIGRAPHY n. the determination of age, etc., of sedimentary strata from fossils which they contain.
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| CRYPTOGRAPHISTS | • cryptographists n. Plural of cryptographist. • CRYPTOGRAPHIST n. one who studies cryptographs.
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| HETEROCERCALITY | • heterocercality n. The quality of being heterocercal. • HETEROCERCALITY n. the state of being heterocercal, also HETEROCERCY.
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| HORTICULTURALLY | • horticulturally adv. With respect to horticulture. • HORTICULTURAL adv. relating to horticulture.
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| HYDROEXTRACTORS | • hydroextractors n. Plural of hydroextractor. • HYDROEXTRACTOR n. a drying machine that works centrifugally.
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| HYDROTHERAPISTS | • hydrotherapists n. Plural of hydrotherapist. • HYDROTHERAPIST n. a practitioner of hydrotherapy.
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| HYDROXYBUTYRATE | • hydroxybutyrate n. (Chemistry) any salt or ester of hydroxybutyric acid, but especially of gamma-hydroxybutyric acid. • HYDROXYBUTYRATE n. as in gamma hydroxybutyrate, a substance that occurs naturally in the brain, used medically as a sedative but also as a recreational drug and alleged aphrodisiac.
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| HYETOMETROGRAPH | • HYETOMETROGRAPH n. an instrument for recording rainfall. | 
| NORTHCOUNTRYMAN | • north␣countryman n. Someone from the north of England. • NORTHCOUNTRYMAN n. one living in the north.
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| NORTHEASTWARDLY | • northeastwardly adv. Towards the northeast. • NORTHEASTWARDLY adv. in a northeasterly direction.
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| NORTHWESTWARDLY | • northwestwardly adv. Towards the northwest. • NORTHWESTWARDLY adv. NORTHWESTWARD.
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| ORTHOPSYCHIATRY | • orthopsychiatry n. (Psychiatry) branch of psychiatry concerned with the prevention of mental illness, especially in the young. • ORTHOPSYCHIATRY n. preventive psychiatry for young people.
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| POLYARTHRITIDES | • polyarthritides n. Plural of polyarthritis. • POLYARTHRITIS n. arthritis affecting several joints.
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| POLYARTHRITISES | • POLYARTHRITIS n. arthritis affecting several joints. | 
| PYRETOTHERAPIES | • PYRETOTHERAPY n. medical treatment by causing fever. | 
| RONTGENOTHERAPY | • RONTGENOTHERAPY n. treatment by X-rays. | 
| TETARTOHEDRALLY | • TETARTOHEDRAL adv. having one fourth the number of planes required by complete symmetry. | 
| TETRAHYDROFURAN | • tetrahydrofuran n. (Organic chemistry) A heterocyclic ether having a five-membered ring with four carbon atoms and one… • TETRAHYDROFURAN n. a flammable liquid ether derived from furan and used as a solvent and as an intermediate in organic synthesis.
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