| declination | (noun) a polite refusal of an invitation | Synonyms: regrets |
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| (noun) (astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere | Synonyms: celestial latitude, dec |
| (noun) a downward slope or bend | Synonyms: declension, decline, declivity, descent, downslope, fall |
| (noun) a condition inferior to an earlier condition; a gradual falling off from a better state; decline | Synonyms: decline |
| decline | (noun) a downward slope or bend | Synonyms: declension, declination, declivity, descent, downslope, fall |
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| (noun) a gradual decrease; as of stored charge or current | Synonyms: decay |
| (noun) change toward something smaller or lower | Synonyms: diminution |
| (noun) a condition inferior to an earlier condition; a gradual falling off from a better state; decline | Synonyms: declination |
| declinometer | (noun) an instrument for measuring magnetic declination | Synonyms: transit declinometer |
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| declivity | (noun) a downward slope or bend | Synonyms: declension, declination, decline, descent, downslope, fall |
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| eclipse | (noun) one celestial body obscures another | Synonyms: occultation |
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| eclipsis | (noun) omission or suppression of parts of words or sentences | Synonyms: ellipsis |
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| ecliptic | (noun) the great circle representing the apparent annual path of the sun; the plane of the Earth's orbit around the sun; makes an angle of about 23 degrees with the equator | - |
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| meclizine | (noun) an antihistamine (trade name Antivert) used to treat or prevent motion sickness | Synonyms: Antivert, meclizine hydrochloride |
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| recliner | (noun) an armchair whose back can be lowered and foot can be raised to allow the sitter to recline in it | Synonyms: lounger, reclining chair |
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| reclining | (noun) the act of assuming or maintaining a reclining position | - |
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