| K-F Ring | Kayser-Fleischer Ring |
|---|---|
| ABR | abortus Bang ring [test]; absolute bed rest; auditory brainstem response |
| beta [Greek letter beta] | an anomer of a carbohydrate; buffer capacity; carbon separated from a carboxyl by one other carbon i... |
| ERFS | electrophysiological ring finger splinting |
| IVR | idioventricular rhythm; intravaginal ring; isolated volume responder |
| BR | Balbiani Ring |
|---|---|
| BPD-MA | Benzoporphyrin derivative monoacid ring A |
| BAR | Biofragmentable Anastomosis Ring |
| BAR | Biofragmentable Anastomotic Ring |
| CVR | Contraceptive Vaginal Ring |
| equatorial | <astronomy> An instrument consisting of a telescope so mounted as to have two axes of motion at right angles to each other, one of them parallel to the axis of the earth, and each carrying a graduated circle, the one for measuring declination, and the other right ascension, or the hour angle, so that the telescope may be directed, even in the daytime, to any star or other object whose right ascension and declination are known. The motion in right ascension is sometimes communicated by clockwork, so as to keep the object constantly in the field of the telescope. Called also an equatorial telescope. The term equatorial, or equatorial instrument, is sometimes applied to any astronomical instrument which has its principal axis of rotation parallel to the axis of the earth. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| equatorial cleavage | Cleavage in which the plane of cytoplasmic division is at right angles to the axis of the ovum. (05 Mar 2000) |
| equatorial division | Nuclear division in which each chromosome divides equally. (05 Mar 2000) |
| equatorial guinea | A republic in central africa, north of gabon and bounded on the west by the atlantic ocean. Its capital is malabo. Equatorial guinea was discovered by the portuguese in 1491 and ceded to spain in 1778. The country gained independence in 1968. Equatorial refers to its location near the equator in the broad region long known as guinea . (12 Dec 1998) |
| equatorial plane | In metaphase of mitosis, the plane that touches all of the centromeres and their spindle attachments. (05 Mar 2000) |
| equatorial plate | <cell biology> Region of the mitotic spindle where chromosomes are aligned at metaphase: as its name suggests, it lies midway between the poles of the spindle. (06 Mar 1998) |
| equatorial staphyloma | A staphyloma occurring in the area of exit of the vortex veins. Synonym: scleral staphyloma. (05 Mar 2000) |
| abdominal ring | The opening in the transversalis fascia through which the ductus deferens (or round ligament in the female) and gonadal vessels enter the inguinal canal. Located midway between anterior superior iliac spine and pubic tubercle, it is bounded medially by the lateral umbilical ligament (inferior epigastric vessels) and inferiorly by the inguinal ligament. Indirect inguinal hernias exit the abdominal cavity via the deep inguinal ring Synonym: annulus inguinalis profundus, abdominal ring, annulus abdominalis, internal inguinal ring. (05 Mar 2000) |
| amnion ring | The ring formed by the attachment of the amnion to the umbilical cord at its point of emergence from the umbilicus. (05 Mar 2000) |
| annuloplasty ring | The dilated annulus is sutured, often to a prosthetic ring, thereby reducing it to its normal systolic size. (05 Mar 2000) |
| anterior limiting ring | The periphery of the cornea marking the termination of Descemet's membrane and the anterior border of the trabecular meshwork; an important landmark in gonioscopy. Synonym: Schwalbe's ring. (05 Mar 2000) |
| Balbani ring | An extremely large puff at a band of a polytene chromosome. (05 Mar 2000) |
| Balbiani ring | <cell biology, genetics> The largest puffs seen on the polytene chromosomes of Diptera are called Balbiani rings after the nineteenth century microscopist who first described polytene chromosomes. (18 Nov 1997) |
| Bandl's ring | A constriction located at the junction of the thinned lower uterine segment with the thick retracted upper uterine segment, resulting from obstructed labour; this is one of the classic signs of threatened rupture of the uterus. Synonym: Bandl's ring, Baudelocque's uterine circle, Scanzoni's second os. (05 Mar 2000) |
| benzene ring | The closed-chain arrangement of the carbon and hydrogen atoms in the benzene molecule. See: cyclic compound. (05 Mar 2000) |
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