| 释义 |
decimal
dec·i·mal D0073000 (dĕs′ə-məl)n.1. a. A linear array of digits that contains a single period, called the decimal point, is possibly preceded by a minus sign (-), and represents a real number, with each successive digit to the right of the decimal point indicating a multiple of the next negative power of 10, and each successive digit to the left of the decimal point indicating a multiple of the next non-negative power of ten, beginning with 100 = 1. For example, 245.3 represents the real number (2 × 102) + (4 × 101) + (5 × 100) + (3 × 10-1) = 200 + 40 + 5 + 3/10 , and -1.04 represents the real number (-1 × 100) + (-4 × 10-2). Also called mixed decimal.b. Such an array of digits in which there are no nonzero digits to the left of the decimal point, representing a real number between -1 and 1. Also called decimal fraction.2. A number written using the base 10.adj.1. Expressed or expressible as a decimal.2. a. Based on 10.b. Numbered or ordered by groups of 10.
[Medieval Latin decimālis, of tenths or tithes, from Latin decima, a tenth part or tithe, from decem, ten; see dekm̥ in Indo-European roots.]
dec′i·mal·ly adv.decimal (ˈdɛsɪməl) n1. (Mathematics) Also called: decimal fraction a fraction that has a denominator of a power of ten, the power depending on or deciding the decimal place. It is indicated by a decimal point to the left of the numerator, the denominator being omitted. Zeros are inserted between the point and the numerator, if necessary, to obtain the correct decimal place2. (Mathematics) any number used in the decimal systemadj3. (Mathematics) a. relating to or using powers of tenb. of the base ten4. (Mathematics) (prenominal) expressed as a decimal[C17: from Medieval Latin decimālis of tithes, from Latin decima a tenth, from decem ten] ˈdecimally advdec•i•mal (ˈdɛs ə məl, ˈdɛs məl)
adj. 1. pertaining to tenths or to the number 10. 2. proceeding by tens: a decimal system. n. 3. decimal fraction. [1600–10; < Medieval Latin decimālis of tenths = Latin decim(a) tenth (derivative of decem ten) + -ālis -al1] dec′i•mal•ly, adv. dec·i·mal (dĕs′ə-məl)1. A representation of a real number using the base ten and decimal notation, such as 201.4, 3.89, or 0.0006.2. A decimal having no digits to the left of the decimal point except zero, such as 0.2 or 0.00354.Thesaurus| Noun | 1. |  decimal - a proper fraction whose denominator is a power of 10decimal fractionproper fraction - a fraction with a numerator smaller than the denominatorcirculating decimal, recurring decimal, repeating decimal - a decimal with a sequence of digits that repeats itself indefinitely | | 2. | decimal - a number in the decimal systemnumber - a concept of quantity involving zero and units; "every number has a unique position in the sequence" | | Adj. | 1. | decimal - numbered or proceeding by tens; based on ten; "the decimal system"denaryquantitative - expressible as a quantity or relating to or susceptible of measurement; "export wheat without quantitative limitations"; "quantitative analysis determines the amounts and proportions of the chemical constituents of a substance or mixture" |
Translationsdecimal (ˈdesiməl) adjective numbered by tens. the decimal system. 十進制的 十进制的 noun a decimal fraction. Convert these fractions to decimals. 十進制，小數點 十进制，小数 ˈdecimalize, ˈdecimalise verb to convert from a non-decimal to a decimal form. 使成為十進制 使成为十进制ˌdecimaliˈzation, ˌdecimaliˈsation noun 十進制 十进制decimal currency a system of money in which each coin or note is either a tenth of or ten times another in value. 十進制貨幣 十进制货币decimal fraction a fraction expressed as so many tenths, hundredths, thousandths etc and written with a decimal point, like this. 0.1 (= 1/10), 2.33 (= 233/100). 十進制分數 十进制分数IdiomsSeedecimal dozendecimal
decimal1. a fraction that has a denominator of a power of ten, the power depending on or deciding the decimal place. It is indicated by a decimal point to the left of the numerator, the denominator being omitted. Zeros are inserted between the point and the numerator, if necessary, to obtain the correct decimal place 2. any number used in the decimal system 3. a. relating to or using powers of ten b. of the base ten 4. expressed as a decimal Decimal a fraction whose denominator is a whole power of the number 10. The decimal is written without a denominator, setting off in the numerator to the right of the decimal point as many digits as there are zeros in the denominator (for example, 485,634/1,000 = 485.634 and 3/100 = 0.03). In such notation, the part to the left of the decimal point designates the integer part of the fraction. The first digit after the decimal point designates the number of tenths; the second, the number of hundredths; and so forth. The decimal notation of rational numbers whose denominator does not have other prime factors except 2 and 5 contains a finite number of digits (for example, 4/25 = 0.16). In general, the digits in the decimal notation of a rational number begin repeating at some position; such a number is an infinite repeating decimal (for example, 7/6 = 1.1666 …). Irrational numbers are nonrepeating infinite decimals (for example,  = 1.41421 . … In all cases, the decimal of akak-1 … a0b1b2 … can be written in the form 
where ak, ak-1, … , a0, b1b2, are the numerals 0, 1, 2, … , 9 (ak ≠ 0) in the corresponding digit of the number. For example, 382.1274 = 3 x 102 + 8 × 10 + 2 + 1/10 + 2/102 + 7/103 + 4/104, that is, here a2 = 3, a1 = 8,a0 = 2, b1 = 1, b2 = 2, b3 = 7, and b4 = 4. Decimals were already used in the 14th-15th centuries. The Samarkand mathematician Al Kashi described the decimal system in 1427. In Europe, the decimal was introduced by S. Stevin in 1584. decimal[′des·məl] (mathematics) A number expressed in the scale of tens. decimalMeaning 10. The numbering system used by humans, which is based on 10 digits. In contrast, computers use binary numbers because it is easier to design electronic systems that can maintain two states rather than 10.FinancialSeeDecimelSee D
See DECdecimal
Related to decimal: decimal placesSynonyms for decimalnoun a proper fraction whose denominator is a power of 10SynonymsRelated Words- proper fraction
- circulating decimal
- recurring decimal
- repeating decimal
noun a number in the decimal systemRelated Wordsadj numbered or proceeding by tensSynonymsRelated Words |