Tuesday, December 31, 2013
seaplane tender
A seaplane tender (or seaplane carrier) is a ship that provides facilities for operating seaplanes. These ships were the first aircraft carriers and appeared just before the First World War.
Monday, December 30, 2013
Desalination
Desalination, desalinization, or desalinisation refers to any of several processes that remove some amount of salt and other minerals from water. More generally, desalination may also refer to the removal of salts and minerals, as in soil desalination.
Water is desalinated in order to convert salt water to fresh water so it is suitable for human consumption or irrigation. Sometimes the process produces table salt as a by-product. Desalination is used on many seagoing ships and submarines. Most of the modern interest in desalination is focused on developing cost-effective ways of providing fresh water for human use in regions where the availability of fresh water is, or is becoming, limited.
Sunday, December 29, 2013
Saturday, December 28, 2013
Amanuensis
Friday, December 27, 2013
Hussar
Hussar refers to a number of types of light cavalry which originated in Hungary in the 14th century, tracing its roots from Serbian medieval cavalry tradition, brought to Hungary in the course of the Serb migrations, which began in the late 14th century.
Thursday, December 26, 2013
cinquefoil
In knot theory, the cinquefoil knot, also known as Solomon's seal knot or the pentafoil knot, is one of two knots with crossing number five, the other being the three-twist knot. It is listed as the 51 knot in the Alexander-Briggs notation, and can also be described as the (5,2)-torus knot. The cinquefoil is the closed version of the double overhand knot.
The cinquefoil is a prime knot. Its writhe is 5, and it is invertible but not amphichiral.Wednesday, December 25, 2013
Tuesday, December 24, 2013
arepa
Monday, December 23, 2013
Dubtitle
Sunday, December 22, 2013
Saturday, December 21, 2013
kayfabe
Kayfabe is often seen as the suspension of disbelief that is used to create the non-wrestling aspects of promotions, such as feuds, angles, and gimmicks, in a similar manner with other forms of entertainment such as soap opera or film.
Friday, December 20, 2013
Thursday, December 19, 2013
Wednesday, December 18, 2013
Gyrojet
The Gyrojet is a family of unique firearms developed in the 1960s named for the method of gyroscopically stabilizing its projectiles. Gyrojets fire small rockets, rather than inert bullets, which have little recoil and do not require a heavy barrel to resist the pressure of the combustion gases. Velocity on leaving the tube was very low, but increased to around 1,250 feet per second (380 m/s) at 30 feet (9.1 m). The result is a very lightweight weapon with excellent ballistics.
Long out of production, today they are a coveted collector's item with prices for even the most common model ranging above $1,000. They are, however, rarely fired; ammunition, when available at all, can cost over $100 per round.Tuesday, December 17, 2013
Promethium
Promethium is a chemical element with the symbol Pm and atomic number 61. It is notable for being the only exclusively radioactive element besides technetium that is followed by chemical elements with stable isotopes.
Monday, December 16, 2013
muchacho
muchacho m (plural muchachos, feminine singular muchacha, feminine plural muchachas)
Usage notes
The noun muchacho is like several other Spanish nouns with a human referent. The masculine forms are used when the referent is known to be male, a group of males, a group of mixed or unknown gender, or an individual of unknown or unspecified gender. The feminine forms are used if the referent is known to be female or a group of females.
Sunday, December 15, 2013
Punycode
Saturday, December 14, 2013
Castanets
Castanets are a percussion instrument (idiophone), used in Moorish, Ottoman, ancient Roman, Italian, Spanish and Portuguese music. The instrument consists of a pair of concave shells joined on one edge by a string. They are held in the hand and used to produce clicks for rhythmic accents or a ripping or rattling sound consisting of a rapid series of clicks. They are traditionally made of hardwood, although fibreglass is becoming increasingly popular.
Friday, December 13, 2013
Lipofuscin
Lipofuscin is the name given to finely granular yellow-brown pigment granules composed of lipid-containing residues of lysosomal digestion. It is considered one of the aging or "wear-and-tear" pigments, found in the liver, kidney, heart muscle, adrenals, nerve cells, and ganglion cells. It is specifically arranged around the nucleus, and is a type of Lipochrome.
Thursday, December 12, 2013
sans voir
Blindfold chess (also known as sans voir) is a form of chess play wherein the players do not see the positions of the pieces or touch them. This forces players to maintain a mental model of the positions of the pieces. Moves are communicated via a recognized chess notation.
Blindfold chess was considered miraculous for centuries, but it is now accepted that any strong player today can play blindfolded, and many can keep track of more than one simultaneous blindfolded game. In simultaneous blindfold play, an intermediary usually relays the moves between the players.
Wednesday, December 11, 2013
idioticon
idioticon (plural idioticons)
- A dictionary of a peculiar dialect, or of the words and phrases peculiar to one part of a country; a glossary
Tuesday, December 10, 2013
citharede
A citharede (Greek: κιθαροιδός, Latin: citharoedus; British English citharoede) or, in modern usage, citharist, refers to a classical Greek professional performer of the cithara (or sometimes lyre), especially one who used the cithara to accompany singing. Famous citharedes included Terpander and Arion.
"Citharede" was also an epithet of Apollo (Apollo Citharede), and the term is used to refer to statues which portray Apollo with his lyre.
Monday, December 9, 2013
Payasam
Sunday, December 8, 2013
Coulrophobia
Saturday, December 7, 2013
Friday, December 6, 2013
hypovolemia
In physiology and medicine, hypovolemia (also hypovolaemia) is a state of decreased blood volume; more specifically, decrease in volume of blood plasma. It is thus the intravascular component of volume contraction (or loss of blood volume due to things such as hemorrhaging or dehydration), but, as it also is the most essential one, hypovolemia and volume contraction are sometimes used synonymously.
Hypovolemia is characterized by salt (sodium) depletion and thus differs from dehydration, which is defined as excessive loss of body water.
Thursday, December 5, 2013
euphonium
The euphonium is a conical-bore, tenor-voiced brass instrument. It derives its name from the Greek word euphonos, meaning "well-sounding" or "sweet-voiced" (eu means "well" or "good" and phonos means "of sound", so "of good sound"). The euphonium is a valved instrument; nearly all current models are piston valved, though rotary valved models do exist.
Wednesday, December 4, 2013
Cymatics
Cymatics (from Greek: κῦμα "wave") is the study of visible sound and vibration, a subset of modal phenomena. Typically the surface of a plate, diaphragm, or membrane is vibrated, and regions of maximum and minimum displacement are made visible in a thin coating of particles, paste, or liquid. Different patterns emerge in the exitatory medium depending on the geometry of the plate and the driving frequency.
The apparatus employed can be simple, such as a Chladni Plate or advanced such as the CymaScope, a laboratory instrument that makes visible the inherent geometries within sound and music.
Tuesday, December 3, 2013
litotes
In rhetoric, litotes is a figure of speech in which understatement is employed for rhetorical effect when an idea is expressed by a denial of its opposite, principally via double negatives. For example, rather than saying that something is attractive (or even very attractive), one might merely say it is "not unattractive."
Litotes is a form of understatement, always deliberate and with the intention of emphasis. However, the interpretation of negation may depend on context, including cultural context. In speech, it may also depend on intonation and emphasis; for example, the phrase "not bad" can be said in such a way as to mean anything from "mediocre" to "excellent."
The use of litotes appeals specifically to certain cultures including the northern Europeans and is popular in English, Russian, and French. They are features of Old English poetry and of the Icelandic sagas and are a means of much stoical restraint.
e.g. not bad means good.
Monday, December 2, 2013
clarion
Sunday, December 1, 2013
talk nineteen to the dozen
to speak rapidly and without stopping
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Nureongi (누렁이) and Hwangu (황구; 黃狗) are Korean terms meaning "Yellow Dog" used to refer to tannish mongrel or landrace of dog in...
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Engrams are a hypothetical means by which memory traces are stored as biophysical or biochemical changes in the brain (and other neural...