| quadrantal | 1. A cubical vessel containing a Roman cubic foot, each side being a Roman square foot; used as a measure. 2. A cube. Origin: L. <geometry> Of or pertaining to a quadrant; also, included in the fourth part of a circle; as, quadrantal space. Quadrantal triangle, a spherical triangle having one side equal to a quadrant or arc of 90 deg . Quadrantal versor, a versor that expresses rotation through one right angle. Origin: L. Quadrantalis containing the fourth fourth part of a measure. Source: Websters Dictionary (01 Mar 1998) |
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| cephalalgia | <symptom> Pain in the head, headache. Synonym: cephalgia, cephalodynia. Origin: Gr. Kephalalgia (18 Nov 1997) |
| histaminic cephalalgia | <symptom> A term used to describe a headache that is typified by constant, unilateral pain around the eye, with onset usually within 2-3 hours of falling asleep. Can be accompanied by a blocked nasal passage, runny nose, and-or tearing. One may also notice facial flushing, ptosis (dropping eyelid), facial swelling and constriction of the pupils. (27 Sep 1997) |
| Horton's cephalalgia | <symptom> A term used to describe a headache that is typified by constant, unilateral pain around the eye, with onset usually within 2-3 hours of falling asleep. Can be accompanied by a blocked nasal passage, runny nose, and-or tearing. One may also notice facial flushing, ptosis (dropping eyelid), facial swelling and constriction of the pupils. (27 Sep 1997) |
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