| 释义 |
pentad
pen·tad P0171300 (pĕn′tăd′)n. A group of five.
[Greek pentas, pentad-, group of five, from pente, five; see penkwe in Indo-European roots.]pentad (ˈpɛntæd) n1. (Mathematics) a group or series of five2. (Mathematics) the number or sum of five3. a period of five years4. (Chemistry) chem a pentavalent element, atom, or radical5. (Physical Geography) meteorol a period of five days[C17: from Greek pentas group of five]pen•tad (ˈpɛn tæd)
n. 1. a period of five years. 2. a group of five. 3. the number five. 4. a pentavalent element or group. [1645–55; < Greek pentad- (s. of pentás) group of five. See pent-, -ad1] Pentad a group of five, especially five years, 1880.Thesaurus| Noun | 1. |  pentad - the cardinal number that is the sum of four and one5, cinque, fin, five, fivesome, Little Phoebe, Phoebe, quint, quintuplet, quintet, Vdigit, figure - one of the elements that collectively form a system of numeration; "0 and 1 are digits" |
pentad
pentad[′pen‚tad] (climatology) A period of 5 consecutive days, often preferred to the week for climatological purposes since it is an exact factor of the 365-day year. pentad
pen·tad (pen'tad), 1. A collection of five things in some way related. 2. In chemistry, a pentavalent element. [G. pentas, the number 5] pen·tad (pen'tad) 1. A collection of five things in some way related. 2. In chemistry, a pentavalent element. [G. pentas, the number 5]pentad (pĕn′tăd) [Gr. pente, five] 1. A radical or element with a valence of five.2. A group of five.pentad
Related to pentad: Reynolds pentadSynonyms for pentadnoun the cardinal number that is the sum of four and oneSynonyms- 5
- cinque
- fin
- five
- fivesome
- Little Phoebe
- Phoebe
- quint
- quintuplet
- quintet
- V
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