| aspidistra | (noun) evergreen perennial with large handsome basal leaves; grown primarily as a foliage houseplant | Synonyms: Aspidistra elatio, bar-room plant, cast-iron plant |
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| calyptra | (noun) the hood or cap covering the calyx of certain plants: e.g., the California poppy | - |
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| extra | (adjective) further or added | Synonyms: additional |
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| (adjective) more than is needed, desired, or required | Synonyms: excess, redundant, spare, supererogatory, superfluous, supernumerary, surplus |
| (adjective) added to a regular schedule | Synonyms: special |
| (noun) something additional of the same kind | Synonyms: duplicate |
| (noun) an additional edition of a newspaper (usually to report a crisis) | - |
| (noun) a minor actor in crowd scenes | Synonyms: spear carrier, supernumerary |
| (adverb) unusually or exceptionally | - |
| fenestra | (noun) a small opening covered with membrane (especially one in the bone between the middle and inner ear) | - |
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| gyromitra | (noun) any fungus of the genus Gyromitra | - |
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| haematocolpometra | (noun) accumulation of blood in the vagina and uterus | Synonyms: hematocolpometra |
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| hematocolpometra | (noun) accumulation of blood in the vagina and uterus | Synonyms: haematocolpometra |
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| mantra | (noun) (Sanskrit) literally a `sacred utterance' in Vedism; one of a collection of orally transmitted poetic hymns | - |
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| (noun) a commonly repeated word or phrase | - |
| orchestra | (noun) seating on the main floor in a theater | - |
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| (noun) a musical organization consisting of a group of instrumentalists including string players | - |
| palaestra | (noun) a public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes | Synonyms: palestra |
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| palestra | (noun) a public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes | Synonyms: palaestra |
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| sutra | (noun) a rule or aphorism in Sanskrit literature or a group of aphoristic doctrinal summaries prepared for memorization | - |
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| tantra | (noun) any of a fairly recent class of Hindu or Buddhist religious literature concerned with ritual acts of body and speech and mind | - |
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| tetra | (noun) brightly colored tropical freshwater fishes | - |
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| ultra | (adjective) (used of opinions and actions) far beyond the norm | Synonyms: extremist, radical |
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