occult

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occult

 [ŏ-kult´]
obscure or hidden from view.
occult blood test examination by microscope or chemical test of a specimen (such as feces, urine, or gastric juice) for presence of blood that is not otherwise detectable. Feces are tested when intestinal bleeding is suspected but there is no visible evidence of blood.

oc·cult

(ŏ-kŭlt', ok'ŭlt),
1. Hidden; concealed; not manifest.
2. Denoting a concealed hemorrhage, the blood being inapparent or localized to a site where it is not visible.
3. In oncology, a clinically unidentified primary tumor with recognized metastases.
[L. oc-culo, pp. -cultus, to cover, hide]

occult

/oc·cult/ (ŏ-kult´) obscure or hidden from view.

occult

(ə-kŭlt′, ŏk′ŭlt′)
adj.
a. Medicine Detectable only by microscopic examination or chemical analysis, as a minute blood sample.
b. Not accompanied by readily detectable signs or symptoms: occult carcinoma.
v.intr.
To become concealed or extinguished at regular intervals: a lighthouse beacon that occults every 45 seconds.

oc·cult′ly adv.
oc·cult′ness n.

occult

[əkult′]
Etymology: L, occultare, to hide
hidden or difficult to observe directly, such as occult prolapse of the umbilical cord or occult blood.

occult

Medspeak
adjective Not obvious; hidden; of unknown cause.

occult

adjective Not obvious, hidden, of unknown cause noun Paranormal dee-dee-dee–dee–dee-dee-dee–dee

oc·cult

(ŏ-kŭlt')
1. Hidden; concealed; not manifest.
2. Denoting a disease or condition (bleeding, infection) that is clinically inapparent, though it may be inferred from indirect evidence or identified by special tests.
See: occult blood
3. oncology A clinically unidentified primary tumor with recognized metastases.

occult

Concealed or hidden, especially of traces of blood in the faeces or sputum which can be detected only by special tests.

Occult

Not visible or easily detected.

oc·cult

(ŏ-kŭlt')
Hidden; concealed; not manifest.

occult

obscure or hidden from view.

occult blood test
examination, microscopically or by a chemical test, of a specimen of feces, urine, gastric juice, etc., to determine the presence of blood not otherwise detectable. Feces are tested when intestinal bleeding is suspected but there is no visible evidence of blood in the stools.
occult heartworm infection
infection by Dirofilaria immitis in which circulating microfilariae cannot be detected in the peripheral blood by the usual test methods.
occult spavin
see occult spavin.
occult virus
the virus or infectious agent cannot be isolated but there is strong circumstantial evidence that it is present, e.g. scrapie prion.
References in periodicals archive ?
The four Galilean satellites will also be occulted, and Figure 2 shows the northern limits of their occultation regions.
From a presentation on occultation statistics, it was shown that more and more successful observations are being achieved year by year as improvements are made in astrometric accuracy both of stars' positions and of the orbits of solar system objects.
Though seriously ill at the time, he was very satisfied when on 2010 February 20, with six other observers in the UK he managed to make multichord timings of an occultation involving the minor planet (130) Elektra: the most successful UK coverage to date and one of the highlights of the ESOP XXIX meeting held later in the year.
The last dark-sky occultation of Venus from New York occurred on Boxing morning in 1978, but nearly 53 years will have elapsed before the next opportunity on 2031 September 13.
Although no one had previously observed a stellar occultation by Amaithea, four are predicted for next year--including an April 14th event with a track that crosses the northeastern U.
It is notable that IOTA, a mainly amateur body, recently took on responsibility for maintaining the international database of all lunar occultation observations.
However, none of the observing teams recorded an occultation.
A mystery, however, is that neither group detected any occultation where the other side of the ring hould also have blocked out the star.
Moreover, a spectacular grazing occultation will take place along a narrow path skirting Vancouver and crossing the upper Midwest, then the Toronto area and the U.
It was barely good enough to get a useful size and shape for some asteroids, and it only worked if enough observers were lucky enough to be within the occultation track.
Except in one instance: during a grazing lunar occultation of a bright red or orange star--in particular Aldebaran, the 1st-magnitude eye of Taurus.
One lunar month after the July 29th occultation, the Moon crosses Aldebaran again: during daytime on August 25th for much of the southwestern U.