relational data structure
sâxtâr-e dâdehâ-ye bâzâneši
Fr.: structure de données relationnelle
A type of data structure in which data are represented as tables in which no entry contains more than one value.
Fr.: système relationnel
A database management system in which a relational data structure is used.
(adj.): Existing or having its specific nature only by relation to
something else; not absolute or independent.
From M.E. relatif (n.), from O.Fr. relatif, from L.L. relativus "having reference or relation," from L. relatus, suppletive p.p. of referre "to refer," → relate.
Bâzâni, from bâzân- present stem of bâzânidan, → relate, + -i adj. suffix.
Fr.: azimut relatif
Fr.: datation relative
A method of dating that can only tell us whether an event or object is older or younger than another event or object. In geology, different layers of rock are compared to determine an ordered sequence of events in geologic history. In contrast to → absolute dating, relative dating cannot give the actual age of a rock. See also → stratigraphy.
Fr.: densité relative
The ratio of the density of a substance to the density of a given reference material. For a solid or liquid, it is the density (at 20°C) relative to the maximum density of water (at 4°C). For a gas is its density divided by the density of hydrogen (or sometimes dry air) at the same temperature and pressure. Also called → specific density.
Fr.: erreur relative
The → absolute error divided by the true value x, that is: Δx/x. The result may be expressed as a percentile and is useful when we want to determine the error relative to the value of the exact quantity.
Fr.: fréquence relative
Statistics: The number of the occurrences of an event divided by the number of observations.
Fr.: humidité relative
The amount of moisture in the air compared to what the air can "hold" at that temperature. It is given by the ratio of the partial pressure of water vapor in the mixture to the saturated vapor pressure of water at a specific temperature.
Fr.: invariant relatif
A → relative tensor of order zero.
Fr.: perméabilité relative
relative refractive index
dišan-e šekasti-ye bâzâni
Fr.: indice de réfraction relatif
The ratio of the sine of the angle of incidence to the sine of the angle of refraction for a ray passing out of one of the media into the other.
relative sunspot number
šomâr-e bâzâni-ye hurlak
Fr.: nombre relatif de taches solaires
Fr.: tenseur relatif
A generalized tensor concept that is characterized by a → Jacobian matrix of transformation raised to a power called → weight of a tensor density. In practice, only relative tensors of weight 1 or -1 are used. The product of a relative tensor of weight -1 by another tensor of weight 1 is an → absolute tensor. Same as → tensor density.
Fr.: vecteur relatif
Fr.: vitesse relative
For two objects A and B, the velocity which B, supposing itself at rest, assigns to A.
In a relative manner; in relation to something else.
From → relative + -ly "-vâr, -âné."
The belief that truth is relative and may vary from individual to individual, from group to group, or from time to time, having no objective standard.
From → relative + -ism a suffix used in the formation of nouns denoting action or practice, state or condition, principles, doctrines, etc.
Bâzâni-bâvari, from bâzâni, → relative, + bâvari, from bâvar "belief" (Mid.Pers. wâbar "beleif;" Proto-Iranian *uar- "to choose; to convince; to believe;" cf. Av. var- "to choose; to convince" varəna-, varana- "conviction, faith;" O.Pers. v(a)r- "to choose; to convince;" Skt. vr- "to choose," vara- "choosing").
An adherent or advocate of relativism.
From → relative + -ist a suffix of nouns.
Adj. from → relativism.
1) Physics: Relating to the → relativity theory.