| quarternary structure | The three-dimensional structure of a complex protein, this especially refers to the way the subunits fit together. (09 Oct 1997) |
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| quartic | <mathematics> A curve or surface whose equation is of the fourth degree in the variables. Source: Websters Dictionary (01 Mar 1998) |
| quartile | <astronomy> Same as Quadrate. Origin: F.quartile aspect, fr. L. Quartus the fourth. See Quart. Source: Websters Dictionary (01 Mar 1998) |
| quartine | <botany> A supposed fourth integument of an ovule, counting from the outside. Origin: F, fr. L. Quartus the fourth. Source: Websters Dictionary (01 Mar 1998) |
| quartisect | Synonym: quadrisect. Origin: L. Quartus, fourth, + seco, pp. Sectus, to cut (05 Mar 2000) |
| quartz | <chemical> A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colourless and transparent, but sometimes also yellow, brown, purple, green, and of other colours; also in cryptocrystalline massive forms varying in colour and degree of transparency, being sometimes opaque. The crystalline varieties include: amethyst, violet; citrine and false topaz, pale yellow; rock crystal, transparent and colourless or nearly so; rose quartz, rosecoloured; smoky quartz, smoky brown. The chief crypto-crystalline varieties are: agate, a chalcedony in layers or clouded with different colours, including the onyx and sardonyx; carnelian and sard, red or flesh-coloured chalcedony; chalcedony, nearly white, and waxy in luster; chrysoprase, an apple-green chalcedony; flint, hornstone, basanite, or touchstone, brown to black in colour and compact in texture; heliotrope, green dotted with red; jasper, opaque, red yellow, or brown, coloured by iron or ferruginous clay; prase, translucent and dull leek-green. Quartz is an essential constituent of granite, and abounds in rocks of all ages. It forms the rocks quartzite (quartz rock) and sandstone, and makes most of the sand of the seashore. Origin: G. Quarz. Source: Websters Dictionary (01 Mar 1998) |
| quartz glass | A transparent, colourless crystal, made by fusing pure quartz sand, which transmits ultraviolet light. (05 Mar 2000) |
| quartz wedge | <microscopy> A compensator consisting of a gradual wedge of quartz of such orientation and dimensions as to show at least several orders of retardation colours as illustrated by the Michel Levy scale of retardation colours and birefringence vs. Thickness of specimen. The Babinet compensator employs two opposing quartz wedges, calibrated in terms of retardation. (05 Aug 1998) |
| quartziferous | <chemical> Consisting chiefly of quartz; containing quartz. Origin: Quartz. Source: Websters Dictionary (01 Mar 1998) |
| quartzite | <chemical> Massive quartz occurring as a rock; a metamorphosed sandstone. Synonym: quartz rock. Origin: Cf. F. Quartzite. Source: Websters Dictionary (01 Mar 1998) |
| quartzoid | <chemistry> A form of crystal common with quartz, consisting of two six-sided pyramids, base to base. Origin: Quartz. Source: Websters Dictionary (01 Mar 1998) |
| quartzose | <chemical> Containing, or resembling, quartz; partaking of the nature or qualities of quartz. Origin: Cf. F. Quartzeux, G. Quarzig. Source: Websters Dictionary (01 Mar 1998) |
| quartzous | <chemical> Quarzose. Source: Websters Dictionary (01 Mar 1998) |
| quartzy | <chemical> Quartzose. Source: Websters Dictionary (01 Mar 1998) |
| quartz |
Quartz is the second most abundant mineral in the Earth's crust. It has a hexagonal crystal structure made of trigonal crystallized silica (silicon dioxide, SiO2), with a hardness of 7 on the Mohs scale. Density is 2.6 g/cm³. The typical shape is a six-sided prism that ends in six-sided pyramids, although these are often distorted, or so massive that only part of the shape is apparent from a mined specimen. ...
출처: en.wikipedia.org/wiki/Quartz
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| quartz |
A mineral composed of the elements silicon and oxygen (silicon dioxide) that occurs in multiple forms.
출처: www.modernhumanorigins.com/q.html
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| quartz |
a crystalline mineral, often transparent, in which gold and silver veins were most commonly found.
출처: members.tripod.com/~mr_sedivy/colorado41.html
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| quartz |
A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.
출처: www.angelfire.com/pa/baconbacon/page4.html
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| quarter |
a section of the surface of a millstone defined by master furrows, not necessarily one-fourth the surface area of a millstone. Quarter dress- a form of millstone dress using a series of straight furrows, the largest of which divide the surface of the millstone into regions called "quarters." Quern- a simple form of rotary grist mill, consisting of a stationary lower bed stone and an upper runner stone usually rotated by hand with the aid of a stick or lever fastened to the upper stone. ...
출처: www.angelfire.com/journal/pondlilymill/glossary.ht...
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| QUART | one of the four major division of the compass |
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| QUART | a fourth part of a year |
| QUART | one of four periods into which the school year is divided |
| QUART | a unit of time equal to 15 minutes or a quarter of an hour |
| QUART | one of four periods of play into which some games are divided |
| QUART | divide by four |
| QUART | divide into quarters |
| QUART | pull (a person) apart with four horses tied to his extremities, so as to execute him |
| QUART | provide housing for, of military personnel |
| QUART | consisting of one of four equivalent parts |
| QUART | a crack on the inside of a horse's forefoot |
| QUART | a Christian holy day |