| doublet | <microscopy> Two simple lens elements cemented together, for the purpose of giving spherical and chromatic corrections. An achromatic doublet may be composed of a positive crown-glass lens and a negative flint-glass lens. The errors of one element are made to compensate those of the other element. (05 Aug 1998) |
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| doublet microtubule | <cell biology> Microtubules of the axoneme. The outer nine sets are often referred to as doublet microtubules, although only one the A tubule) is complete and has 13 protofilaments. The B tubule has only 10 or 11 protofilaments and shares the remainder with the A tubule. A and B tubules differ in their stability and in the other proteins attached periodically to them, it is the dynein affixed to the A tubule attaching and detaching from the B tubule of the adjacent doublet that generates sliding movement in the axoneme. (18 Nov 1997) |
| doublethreaded | 1. Consisting of two threads twisted together; using two threads. 2. <mechanics> Having two screw threads instead of one; said of a screw in which the pitch is equal to twice the distance between the centers of adjacent threads. Source: Websters Dictionary (01 Mar 1998) |
| Wollaston's doublet | A combination of two planoconvex lenses in the eyepiece of a microscope designed to correct the chromatic aberration. (05 Mar 2000) |
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| doublet |
a man's close-fitting jacket; worn during the Renaissance
Ãâó: wordnet.princeton.edu/perl/webwn
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| doublet |
A doublet is a man's snug-fitting buttoned jacket that was worn in medieval and Tudor times. Originally it was a mere stitched and quilted lining ("doubling"), worn under a hauberk or cuirass to prevent bruising and chafing. Then, like many other originally practical items in the history of men's wear, from the late 15th century onward it became elaborated enough to be seen on its own. ...
Ãâó: en.wikipedia.org/wiki/Doublet_(clothing)
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A doublet is one of two or more words of the same language that come from the same root. Doublets may be nearly synonymous, for example English pyre and fire; may have fairly different meanings, for example aperture and overture (the commonality behind the meanings is "opening"); or may even develop meanings that are in a sense opposites, for example host and guest. Doublets also vary with respect to how far their forms have diverged. ...
Ãâó: en.wikipedia.org/wiki/Doublet_(linguistics)
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This short tunic was originally made of double material with padding inside. It was tight fitting.
Ãâó: home.olemiss.edu/~tjray/medieval/chivarlic.htm
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A method of combining two inexpensive stones and/or glass to imitate more valuable gemstones. For example, a green glass bottom with a garnet top will give the appearance of a fine emerald because the top is a natural gemstone with cut facets, and a few natural imperfections, and the bottom is bright green which reflects throughout the stone.
Ãâó: www.zulumoon.com/glossary/D-glossary.htm
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| doublet | a man's close-fitting jacket |
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| doublet | believing two contradictory ideas at the same time |
| doublet | two items of the same kind |
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