| POLA | polymerase alpha |
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| poland syndrome | <syndrome> A syndrome which is characterised by symbrachydactyly and aplasia of the sternal head of pectoralis major. (12 Dec 1998) |
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| Poland's syndrome | <syndrome> An anomaly consisting of absence of the pectoralis major and minor muscles, ipsilateral breast hypoplasia, and absence of two to four rib segments. (05 Mar 2000) |
| polar | Describes a feature or phenomenon occuring at the end (pole) of an object (such as a planet) or organism (such as an amoeba). <chemistry> Describes a molecular that has a permanent electric dipole. See: polar group. Compare: nonpolar, nonpolar groups. (12 Mar 1998) |
| polar amino acid | An alpha-amino acid in which the functional group attached to the alpha-carbon (i.e., R in RCH(NH2)COOH) has hydrophilic properties; e.g., serine, cysteine, homocysteine. (05 Mar 2000) |
| polar anaemia | A form of anaemia sometimes observed in natives of temperate climates when they migrate to the Arctic or Antarctic regions. (05 Mar 2000) |
| polar body | <cell biology> In animals each meiotic division of the oocyte leads to the formation of one large cell (the egg) and a small polar body as the other cell. Polar body formation is a consequence of the very eccentric position of the nucleus and the spindle. (18 Nov 1997) |
| polar cataract | A capsular cataract limited to an area of the anterior or posterior pole of the lens. (05 Mar 2000) |
| polar cell | <cell biology> In animals each meiotic division of the oocyte leads to the formation of one large cell (the egg) and a small polar body as the other cell. Polar body formation is a consequence of the very eccentric position of the nucleus and the spindle. (18 Nov 1997) |
| polar compound | A compound in which the electric charge is not symmetrically distributed, so that there is a separation of charge or partial charge and formation of definite positive and negative poles; e.g., H2O. See also inorganic compound. (05 Mar 2000) |
| polar fibres | Those fibres of the mitotic spindle extending from the two poles of the spindle toward the equator. Compare: astral fibres, kinetochore fibres. (05 Mar 2000) |
| polar flagellation | <cell biology> Condition of having flagella attached at one end or both ends of the cell. (09 Oct 1997) |
| polar globule | <cell biology> In animals each meiotic division of the oocyte leads to the formation of one large cell (the egg) and a small polar body as the other cell. Polar body formation is a consequence of the very eccentric position of the nucleus and the spindle. (18 Nov 1997) |
| polar granule | <biology> Granules containing a basic protein found in insect eggs that induce the formation of and become incorporated into germ cells. (18 Nov 1997) |
| polar group | <chemistry> Any chemical grouping in which the distribution of electrons is uneven enabling it to take part in electrostatic interactions. (18 Nov 1997) |
| polar lobe | <marine biology> In some molluscs a polar lobe appears as a clear protrusion close to the vegetal pole of the cell prior to the first cleavage and becomes associated with only one of the daughter cells. Removal of the first polar lobe or of any polar lobe that forms at a subsequent mitosis, leads to defects in the embryo, it seems that the polar lobe contains special morphogenetic factors. (18 Nov 1997) |
Synonyms :
Synonyms : Syndrome, Poland
Synonyms : DC Polarography, Pulse Polarography, Polarography, DC, Polarography, Pulse
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| polar |
having a pair of equal and opposite charges diametric: characterized by opposite extremes; completely opposed; "in diametric contradiction to his claims"; "diametrical (or opposite) points of view"; "opposite meanings"; "extreme and indefensible polar positions" located at or near or coming from the earth's poles; "polar diameter"; "polar zone"; "a polar air mass"; "Antarctica is the only polar continent" of or existing at or near a geographical pole or within the Arctic or Antarctic Circles; "polar regions" arctic: extremely cold; "an arctic climate"; "a frigid day"; "gelid waters of the North Atlantic"; "glacial winds"; "icy hands"; "polar weather" pivotal: being of crucial importance; "a pivotal event"; "Its pivotal location has also exposed it to periodic invasions"- Henry Kissinger; "the polar events of this study"; "a polar principal"
Ãâó: wordnet.princeton.edu/perl/webwn
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| polar body |
a small cell containing little cytoplasm that is produced along with the oocyte and later discarded
Ãâó: wordnet.princeton.edu/perl/webwn
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| polar star |
Polaris: the brightest star in Ursa Minor; at the end of the handle of the little dipper; the northern axis of the earth points toward it
Ãâó: wordnet.princeton.edu/perl/webwn
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| polarimeter |
an optical device used to measure the rotation of the plane of vibration of polarized light
Ãâó: wordnet.princeton.edu/perl/webwn
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| polariscope |
polarimeter: an optical device used to measure the rotation of the plane of vibration of polarized light
Ãâó: wordnet.princeton.edu/perl/webwn
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| POLA | a person of Polish descent |
|---|---|
| POLA | a republic in central Europe |
| POLA | widely distributed herbs having palmate leaves and creamy white to or pink to magenta flowers with many stamens of unequal length |
| POLA | strong-scented herb common in southern United States covered with intermixed gland and hairs |
| POLA | strong-scented herb common in southern United States covered with intermixed gland and hairs |
| POLA | having a pair of equal and opposite charges |
| POLA | being of crucial importance |
| POLA | extremely cold |
| POLA | characterized by opposite extremes |
| POLA | of or existing at or near a geographical pole or within the Arctic or Antarctic Circles |
| POLA | located at or near or coming from the earth's poles |
| POLA | white bear of arctic regions |
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