online medical dictionary | definition of exa

<prefix>

Metric prefix used in the SI and metric systems to signify one quintillion, 10^18 or 1,000,000,000,000,000,000 (1 followed by 18 zeroes).

(21 Jun 2000)

<company>

<storage> A company and, by extension, a tape format for computer data backup and transfer. The tape is a data quality 8mm video cassette recorder tape. Exabyte units can store between five and fourteen gigabytes of data per tape. Exabytes are usually attached to Unix workstations.

[What different tape capacities exist? Compare with DAT?]

(01 Mar 1995)

<unit>

2^60 = 1,152,921,504,606,846,976 bytes = 1024 petabytes or roughly 10^18 bytes.

See prefix.

(01 Feb 1996)

To render more violent or bitter; to irriate; to exasperate; to imbitter, as passions or disease.

Origin: L. Exacerbatus, p. P. Of exacerbare; ex out (intens) + acerbare. See Acerbate.

(01 Mar 1998)

An increase in the severity of a disease of its symptoms.

(11 Mar 2008)

Increase of irritation or violence, particularly the increase of a fever or disease.

Origin: L. Exacerbescens, -entis, p. Pr. Of exacerbescere, incho. Of exacerbare.

(01 Mar 1998)

A woman who is an exactor.

Origin: Cf. L. Exactrix.

(01 Mar 1998)

A condition, as in shock, in which a considerable portion of the blood is removed from the main circulation but remains within blood vessels in certain areas where it is stagnant.

Origin: G. Ex, out of, + haima, blood

American spelling: exemia

(05 Mar 2000)

<surgery> In old writers, the operations concerned in the removal of parts of the body.

Origin: NL, fr. Gr. A taking away.

(01 Mar 1998)

<radiobiology> Unit of energy, 10^18 joules, often used as unit of measure for world annual energy use. Comparable in size to a Quad (1 EJ = 0.948 Quads).

(09 Oct 1997)

<botany> Having no albumen about the embryo; said of certain seeds.

Origin: Pref. Ex- + albumen.

(01 Mar 1998)

1. To raise high; to elevate; to lift up. "I will exalt my throne above the stars of God." (Is. Xiv. 13) "Exalt thy towery head, and lift thine eyes" (Pope)

2. To elevate in rank, dignity, power, wealth, character, or the like; to dignify; to promote; as, to exalt a prince to the throne, a citizen to the presidency. "Righteousness exalteth a nation." (Prov. Xiv. 34) "He that humbleth himself shall be exalted." (Luke xiv. 11)

3. To elevate by prise or estimation; to magnify; to extol; to glorify. "Exalt ye the Lord." "In his own grace he doth exalt himself." (Shak)

4. To lift up with joy, pride, or success; to inspire with delight or satisfaction; to elate. "They who thought they got whatsoever he lost were mightily exalted." (Dryden)

5. To elevate the tone of, as of the voice or a musical instrument. "Now Mars, she said, let Fame exalt her voice." (Prior)

6. <chemistry> To render pure or refined; to intensify or concentrate; as, to exalt the juices of bodies. "With chemic art exalts the mineral powers." (Pope)

Origin: L. Exaltare; ex out (intens) + altare to make high, altus high: cf.F. Exalter. See Altitude.

(01 Mar 1998)

<astronomy> Exercising its highest influence; said of a planet.

Origin: L. Exaltatus, p. P. Of exaltare to exalt.

(01 Mar 1998)

1. The act of exalting or raising high; also, the state of being exalted; elevation. "Wondering at my flight, and change To this high exaltation." (Milton)

2. <chemistry> The refinement or subtilization of a body, or the increasing of its virtue or principal property.

3. <astronomy> That place of a planet in the zodiac in which it was supposed to exert its strongest influence.

Origin: L. Exaltatio: cf. F.exaltation.

(01 Mar 1998)

This entry has no definition yet.

(14 Jan 2009)

<assessment> A form of assessment whereby a student is required to undertake a specified academic task within a specified, limited period of time, normally between 1 and 3 hours.

The location of the examination and access to external assistance are normally also regulated.

(08 Mar 2006)

Any investigation or inspection made for the purpose of diagnosis; usually qualified by the method used.

(05 Mar 2000)

<assessment>

This entry has no definition yet.

(14 Jan 2009)

<assessment>

This entry has no definition yet.

(14 Jan 2009)

One who performs an examination.

Origin: L. Examino, to weigh, examine

(05 Mar 2000)

A table on which the patient lies during a medical examination.

(05 Mar 2000)

The process of grovelling through a core dump or hex image in an attempt to discover the bug that brought a program or system down. The reference is to divination from the entrails of a sacrified animal.

Compare: runes, incantation, black art, desk check.

(01 Mar 1994)

1. Lifeless; dead. "Carcasses exanimate."

2. Destitute of animation; spiritless; disheartened. "Pale . . . Wretch, exanimate by love."

Origin: L. Exanimatus, p. P. Of exanimare to deprive of life or spirit; ex out + anima air, breath, life, spirit.

(01 Mar 1998)

<botany> Having the sporangium destitute of a ring; said of certain genera of ferns.

Origin: Pref. Ex- + annulate.

(01 Mar 1998)

Preferred term: exanthema

<dermatology> Exanthem, an eruptive disease or its symptomatic eruption.

(11 Mar 2008)

An acute, short-lived, viral disease of infants and young children characterised by a high fever at onset that drops to normal after 3-4 days and the concomitant appearance of a macular or maculopapular rash that appears first on the trunk and then spreads to other areas. It is the sixth of the classical exanthematous diseases and is caused by hhv-6 (herpes virus 6, human).

(12 Dec 1998)

Relating to an exanthema.

(05 Mar 2000)

Fever associated with an exanthem.

(05 Mar 2000)

<dermatology> Also called baby measles. This is a nonserious but common childhood viral infection that starts with a high fever and swollen lymph glands. After 24 hours, the fever breaks and the child develops a red rash on the neck and trunk.

(27 Sep 1997)

<medicine> An eruption of the skin; cutaneous efflorescence.

Origin: NL, from Gr. See Exanthema.

(01 Mar 1998)

Preferred term: dengue

An external cause of disease, one not originating in the body.

Origin: G. Ex, out of, + anthropos, man

(05 Mar 2000)

Originating outside of the human body.

(05 Mar 2000)

EXtended APT.

(03 Feb 2009)

<botany> Having no aril; said of certain seeds, or of the plants producing them.

Origin: Pref. Ex- + arillate.

(01 Mar 1998)

Preferred term: periarteritis

<entomology> Having but one joint; said of certain insects.

Origin: Pref. Ex- + articulate.

(01 Mar 1998)

Synonyms: disarticulation.

Origin: L. Ex, out, + articulus, joint

(05 Mar 2000)

<ornithology, zoology> Having the anterior scute extending around the tarsus on the outer side, leaving the inner side naked; said of certain birds.

Origin: Gr. Out +,a shield.

(01 Mar 1998)