| retrogression | 1. The act of retrograding, or going backward; retrogradation. 2. <biology> Backward development; a passing from a higher to a lower state of organization or structure, as when an animal, approaching maturity, becomes less highly organised than would be expected from its earlier stages or known relationship. Synonym: retrograde development, and regressive metamorphism. Origin: Cf. F. Retrogression. See Retrograde, and cf. Digression. Source: Websters Dictionary (01 Mar 1998) |
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| retrogressive | 1. Tending to retrograde; going or moving backward; declining from a better to a worse state. 2. <biology> Passing from a higher to a lower condition; declining from a more perfect state of organization; regressive. Origin: Cf. F. Retrogressif. Source: Websters Dictionary (01 Mar 1998) |
| retrohyoid bursa | <anatomy> A bursa between the posterior surface of the body of the hyoid bone and the thyrohyoid membrane. Synonym: bursa retrohyoidea, Boyer's bursa, bursa of hyoid, subhyoid bursa. (05 Mar 2000) |
| retroiliac ureter | Congenital defect where the ureter passes deep to the iliac artery. (05 Mar 2000) |
| retroinguinal space | A triangular space between the peritoneum and the transversalis fascia, at the lower angle of which is the inguinal ligament; it contains the lower portion of the external iliac artery. Synonym: Bogros' space, spatium retroinguinale. (05 Mar 2000) |
| retroinhibition | <biochemistry, physiology> The process of the end product of a particular metabolic reaction inhibiting an allosteric enzyme involved in that reaction as the reaction starts again, thus breaking the reaction cycle. (09 Oct 1997) |
| retroiridian | Posterior to the iris. (05 Mar 2000) |
| retrojection | The washing out of a cavity by the backward flow of an injected fluid. Origin: L. Retro, backward, + jacio, to throw (05 Mar 2000) |
| retrojector | A form of syringe with long tubular attachment to the nozzle, used in retrojection. (05 Mar 2000) |
| retrolental | Posterior to the lens of the eye. Synonym: retrolenticular. (05 Mar 2000) |
| retrolental fibroplasia | <ophthalmology, paediatrics> A bilateral retinopathy occurring in premature infants treated with excessively high concentrations of oxygen, characterised by vascular dilatation, proliferation, and tortuosity, oedema, and retinal detachment, with ultimate conversion of the retina into a fibrous mass that can be seen as a dense retrolental membrane. Usually growth of the eye is arrested and may result in microophthalmia, and blindness may occur. (03 Jul 1999) |
| retrolenticular | Synonym: retrolental. 2. Behind the lentiform nucleus of the brain. (05 Mar 2000) |
| retrolenticular limb of internal capsule | That portion of the capsule caudal to the lentiform nucleus which contains large parts of the optic or geniculocalcarine radiation and other fibre systems. Synonym: pars retrolentiformis capsulae internae, retrolenticular limb of internal capsule. (05 Mar 2000) |
| retrolenticular part of internal capsule | That portion of the capsule caudal to the lentiform nucleus which contains large parts of the optic or geniculocalcarine radiation and other fibre systems. Synonym: pars retrolentiformis capsulae internae, retrolenticular limb of internal capsule. (05 Mar 2000) |
| retrolingual | Relating to the back part of the tongue; posterior to the tongue. Origin: retro-+ L. Lingua, tongue (05 Mar 2000) |
| retrovirus |
A retrovirus is a virus which has a genome consisting of two plus sense RNA molecules, which may or may not be identical. It relies on reverse transcriptase to perform the reverse transcription of its genome from RNA into DNA, which can then be integrated into the host's genome with an integrase . The virus itself is a storage form for its nucleic acid genome as well as a means of delivery of its genome into targeted cells, which constitute the infection. ...
Ãâó: en.wikipedia.org/wiki/Retrovirus
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| retrolisthesis |
Slipped disc (medical term: prolapsed intervertebral disc) is a condition in which, due to a tear in the outer fibrous ring, the central part of the intervertebral disc is protruding into the spinal canal. Most commonly this occurs in the lowermost part of the spine, especially between the fourth and fifth vertebral bodies and between the fifth vetrebral body and the sacrum. This protrusion usually occurs to one side of the spinal canal, at the point where a nerve root leaves the canal. ...
Ãâó: en.wikipedia.org/wiki/Retrolisthesis
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| retrovirus |
A type of virus that has RNA instead of DNA as its genetic material. It uses an enzyme called reverse transcriptase to become part of the host cells' DNA. This allows many copies of the virus to be made in the host cells. The virus that causes AIDS, the human immunodeficiency virus (HIV), is a type of retrovirus.
Ãâó: www.stjude.org/glossary
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| retrospective |
Looking back at events that have already taken place.
Ãâó: www.stjude.org/glossary
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| retrospective study |
A study that compares two groups of people: those with the disease or condition under study (cases) and a very similar group of people who do not have the disease or condition (controls). Researchers study the medical and lifestyle histories of the people in each group to learn what factors may be associated with the disease or condition. For example, one group may have been exposed to a particular substance that the other was not. Also called a case-control study.
Ãâó: www.stjude.org/glossary
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| retr | bent or curved backward |
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| retr | bent or curved backward |
| retr | the act of bending backward |
| retr | an articulatory gesture made by turning the tip of the tongue back against the roof of the mouth |
| retr | a turning or tilting backward of an organ or body part |
| retr | get worse |
| retr | go back over |
| retr | move back |
| retr | move in a direction contrary to the usual one |
| retr | move backward in an orbit, of celestial bodies |
| retr | of amnesia |
| retr | moving or directed or tending in a backward direction or contrary to a previous direction |
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