(n.) The hiding of a heavenly body from sight by the intervention of some other of the heavenly bodies; -- applied especially to eclipses of stars and planets by the moon, and to the eclipses of satellites of planets by their primaries.
(n.) Fig.: The state of being occult.
Example Sentences:
(1) Fecal occult blood was positive in 4 patients and fecal leukocytes were positive in one patient.
(2) The present report details an unusual patient with "occult temporal arteritis" who sustained abrupt monocular visual loss and subsequent ipsilateral ophthalmoplegia involving all functions of the oculomotor nerve.
(3) The concept of almost total breast biopsy has great merit in the discovery of occult carcinoma.
(4) Lateral cervical cystic metastases arising from occult thyroid carcinoma and their ultrasonic differentiation from true cysts are discussed.
(5) The procedure may prove useful for detection of occult infections and may provide a new diagnostic approach in fever of unknown origin.
(6) Previous studies suggest that patients who are in clinical remission harbor tumor in multiple occult "sanctuaries."
(7) While occult breast carcinoma was relatively common in our series (two of 17 patients), the ability to detect the tumor with mammography was disappointing (one of two patients).
(8) A clinico-pathological study of 10 cases (including histopathology) indicates that occult cholesteatoma is neither a congenital cholesteatoma nor an epidermoid cyst, originating in the attic through a melaplastic process of middle ear mucosa behind an intact tympanic membrane.
(9) In order to estimate the diagnostic validity of chemical fecal occult blood tests, i.e.
(10) Arm exercise with myocardial scintigraphy may be an effective method of detecting occult ischemia in patients with peripheral vascular disease.
(11) ), the diagnostic significance (occult carcinoma?, parenchymal asymmetry?, benign or malignant microcalcification?)
(12) The importance of recognising occult CO exposure and of treating symptomatic patients promptly cannot be overemphasized.
(13) In contrast to the immunologically-detected fecal occult blood test, the sensitivity and specificity for CR cancers are surprisingly high, the percentage values in using the Shams test having been found to be 100% and 93.1%, respectively (Shamsuddin).
(14) Accordingly, exacerbation of atherogenesis may accompany release of platelet-associated growth factors (or mitogens) occurring in association with occult, repetitive thrombosis and thrombolysis.
(15) It was found that combining faecal occult blood testing with the health check did not reduce attendance at the health check--43.5% of patients attended when the Haemoccult test kit was offered by the nurse at the health check, 43.6% attended when a test kit was included with the invitation to attend the health check and 42.9% attended when the health check invitation was posted on its own.
(16) Gastric antral vascular ectasia ('water melon stomach') is a poorly documented cause of occult upper gastrointestinal blood loss.
(17) Because cavernous malformations are often angiographically occult and do not have a characteristic appearance on computed tomography (CT), they are seldom recognized preoperatively and may be missed if the surgical specimen is not carefully reviewed.
(18) Taken together, these data demonstrate that dental radiography is not efficacious for the purpose of detecting occult lesions.
(19) A forensic autopsy series of 519 women more than 14 years old was studied for prevalence of benign, atypical, and occult malignant breast lesions.
(20) and metoclopramide stimulation have considerable value in identifying hyperprolactinaemic patients with prolactin-secreting adenomas, particularly those which are radiologically occult.
Syzygy
Definition:
(n.) The point of an orbit, as of the moon or a planet, at which it is in conjunction or opposition; -- commonly used in the plural.
(n.) The coupling together of different feet; as, in Greek verse, an iambic syzygy.
(n.) Any one of the segments of an arm of a crinoid composed of two joints so closely united that the line of union is obliterated on the outer, though visible on the inner, side.
(n.) The immovable union of two joints of a crinoidal arm.
Example Sentences:
(1) Syzygy and gamete formation occurred in the gut of a leech, Johanssonia sp.
(2) The second one is related to the genus Pterospora (in the Polychaeta host, Petaloproctus terricola) but differs from the three species already known by its size and number of terminal digitations in specimens always found in syzygy.
(3) It is characterized by early syzygies with lateral connection and navicular sporocysts with similar poles.