A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic.Each prefix has a unique symbol that is prepended to any unit symbol. The prefix kilo-, for example, may be added to gram to indicate multiplication by one thousand: one kilogram is equal to one thousand grams.

Contemporary computer memory has a binary architecture making a definition of memory units based on powers of 2 most practical. The use of the metric prefix kilo for binary multiples arose as a convenience, because 1,024 is approximately 1,000. This definition was popular in early decades of personal computing, with products like the Tandon 5 1 ⁄ 4-inch DD floppy format …

Yocto (symbol y) is a unit prefix in the metric system denoting a factor of 10 −24 or 0.000 000 000 000 000 000 000 001.. It was adopted in 1991 by the General Conference on Weights and Measures.It comes from the Latin octo or the Ancient Greek οκτώ, meaning "eight", because it is equal to 1000 −8.. It can be used to state a subatomic particle's mass, for example:

In computer science, a trie, also called digital tree or prefix tree, is a type of k-ary search tree, a tree data structure used for locating specific keys from within a set. These keys are most often strings, with links between nodes defined not by the entire key, but by individual characters.In order to access a key (to recover its value, change it, or remove it), the trie is traversed depth ...

Table of number prefixes in English. In the following prefixes, a final vowel is normally dropped before a root that begins with a vowel, with the exceptions of bi-, which is bis-before a vowel, and of the other monosyllables, du-, di-, dvi-, tri-, which are invariable.. The cardinal series are derived from cardinal numbers, such as the English one, two, three.

A centimetre (international spelling) or centimeter (American spelling) (SI symbol cm) is a unit of length in the International System of Units (SI), equal to one hundredth of a metre, centi being the SI prefix for a factor of 1 / 100. The centimetre was the base unit of length in the now deprecated centimetre–gram–second (CGS) system of units.. Though for many physical quantities, SI ...

Deca (International spelling as used by the International Bureau of Weights and Measures; symbol: da) or deka (American spelling) is a decimal unit prefix in the metric system denoting a factor of ten. The term is derived from the Greek déka meaning ten.. The prefix was a part of the original metric system in 1795. It is not in very common usage, although the decapascal is …

Femto (symbol f) is a unit prefix in the metric system denoting a factor of 10 −15.It was added to the International System of Units (SI) in 1964. It is derived from the Danish word femten, meaning "fifteen", which has a vaguely similar spelling to fermi, which was introduced earlier to mean a femtometer.. Examples of use: The HIV-1 virus has the mass of about 1 x 10 −15 g or 1 fg.

In information theory and computer science, the Damerau–Levenshtein distance (named after Frederick J. Damerau and Vladimir I. Levenshtein) is a string metric for measuring the edit distance between two sequences. Informally, the Damerau–Levenshtein distance between two words is the minimum number of operations (consisting of insertions, deletions or substitutions …

The centimetre–gram–second system of units (abbreviated CGS or cgs) is a variant of the metric system based on the centimetre as the unit of length, the gram as the unit of mass, and the second as the unit of time.All CGS mechanical units are unambiguously derived from these three base units, but there are several different ways in which the CGS system was extended to …