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In knot theory, the writhe is a property of an oriented link diagram. The writhe is the total number of positive crossings minus the total number of negative crossings. A direction is assigned to the link at a point in each component and this direction is followed all the way around each component. For each crossing one comes across while traveling in this direction, if the strand un
Trinxet Dictionary of Legal Abbreviations and Acronyms Series. A Law Reference Collection, 2011, ISBN 1624680003 and ISBN 978-1-62468-000-7; Trinxet, Salvador. Trinxet Reverse Dictionary of Legal Abbreviations and Acronyms, 2011, ISBN 1624680011 and ISBN 978-1-62468-001-4. Raistrick, Donald.
Ap (water), a Vedic Sanskrit term; ap, a classical abbreviation for ad pedes or aedilitia potestate; AP, a classification symbol for an auxiliary of the United States Navy; AP and variants, several medical abbreviations; A&P mechanic, an aircraft maintenance technician with airframe and powerplant ratings
The above example illustrates that twist and writhe are interconvertible. Supercoiling can be represented mathematically by the sum of twist and writhe. The twist is the number of helical turns in the DNA and the writhe is the number of times the double helix crosses over on itself (these are the supercoils).
Most of the terms listed in glossaries are already defined and explained within itself. However, glossaries like this one are useful for looking up, comparing and reviewing large numbers of terms together. You can help enhance this page by adding new terms or writing definitions for existing ones.
Meaning Origin language and etymology Example(s) a-, an-not, without (alpha privative) Greek ἀ-/ἀν-(a-/an-), not, without analgesic, apathy, anencephaly: ab-from; away from Latin abduction, abdomen: abdomin-of or relating to the abdomen: Latin abdōmen, abdomen, fat around the belly abdomen, abdominal -ac: pertaining to; one afflicted with
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AAW An acronym for anti-aircraft warfare. aback (of a sail) Filled by the wind on the opposite side to the one normally used to move the vessel forward.On a square-rigged ship, any of the square sails can be braced round to be aback, the purpose of which may be to reduce speed (such as when a ship-of-the-line is keeping station with others), to heave to, or to assist moving the ship's head ...