| AECIDIOSPORE | • AECIDIOSPORE n. a spore produced in an aecidium. | 
| BASIDIOSPORE | • basidiospore n. (Biology) A sexually reproductive spore produced by fungi of the phylum Basidiomycota. • BASIDIOSPORE n. a spore produced by a basidium.
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| CONIDIOPHORE | • conidiophore n. A fungal hypha that produces conidia. • CONIDIOPHORE n. a hypha that produces conidia.
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| CONIDIOSPORE | • conidiospore n. (Biology) A unicellular spore produced asexually by a fungus. • CONIDIOSPORE n. a conidium.
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| DEPOSITORIES | • depositories n. Plural of depository. • DEPOSITORY n. a place where anything is deposited, also DEPOSITARY.
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| DIAGEOTROPIC | • diageotropic adj. (Botany) Relating to, or exhibiting, diageotropism. • DIAGEOTROPIC adj. tending to grow at right angles to the line of gravity.
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| DICHROISCOPE | • dichroiscope n. Alternative form of dichroscope. • DICHROISCOPE n. an instrument for investigating the dichroism of solutions or crystals, also DICHROOSCOPE, DICHROSCOPE.
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| DISOPERATION | • DISOPERATION n. a mutually harmful relationship between two organisms in a community. | 
| EPITROCHOIDS | • epitrochoids n. Plural of epitrochoid. • EPITROCHOID n. a curve like an epicycloid but generated by any point on a radius.
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| PERIODONTIAS | • PERIODONTIA n. the branch of dentistry concerned with periodontal diseases. | 
| PERIODONTICS | • periodontics n. (Dentistry) The study of supporting structures of teeth—gums, alveolar bone, cementum, and the periodontal… • PERIODONTICS n. the study of gums, as a branch of dentistry.
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| PERIODONTIST | • periodontist n. A dentist whose speciality is periodontics. • PERIODONTIST n. a dentist specialising in periodontics.
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| PEROXIDATION | • peroxidation n. (Chemistry) Any oxidation reaction, especially of an oxide, that produces a peroxide. • peroxidation n. (Organic chemistry) The reaction of a double bond with a peroxide.
 • PEROXIDATION n. the creation of a peroxide.
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| PRECONDITION | • precondition n. A condition that requires satisfaction before taking a course of action. • precondition n. A medical illness, ailment, or adverse condition that exists before an insurance policy takes effect.
 • precondition v. (Medicine, biology) To condition in advance.
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| PROPANEDIOIC | • PROPANEDIOIC adj. as in propanedioic acid, a white crystalline acid, aka malonic acid. | 
| RADIOISOTOPE | • radioisotope n. (Physics) a radioactive isotope of an element. • RADIOISOTOPE n. a radioactive isotope.
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| RADIOPHONIES | • RADIOPHONY n. the art or practice of using the radiophone. | 
| RADIOSCOPIES | • radioscopies n. Plural of radioscopy. • RADIOSCOPY n. examination of opaque bodies by X-rays.
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| REPOSITIONED | • repositioned v. Simple past tense and past participle of reposition. • REPOSITION v. to change the position of.
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