• Chambers's Twentieth Century Dictionary
    • Primary-colours the colours obtained by passing the sun's rays through a prism: the colours of the rainbow—red, orange, yellow, green, blue, indigo, and violet
    • ***


In literature:

He was the chosen "fox" of another primary room, and had the fair colouring and sturdy frame which matched his Swedish name.
"How to Tell Stories to Children" by Sara Cone Bryant
I remembered how they hated almost all primary things, but especially primary colours.
"Alarms and Discursions" by G. K. Chesterton
These primary colours made all the world.
"The Rules of the Game" by Stewart Edward White
Jaded with over-refinements and super-subtleties, we seem in many directions to be harking back to the primary colours of life.
"Prose Fancies (Second Series)" by Richard Le Gallienne
The colour of the primary (4) is white, that of the secondary maroon.
"Half-hours with the Telescope" by Richard A. Proctor
Ford points out that it was only in these tiles that the Moors employed any but the primary colours, with gold for yellow.
"Life in Morocco and Glimpses Beyond" by Budgett Meakin
These are the seven primary or prismatic colours.
"Fragments of science, V. 1-2" by John Tyndall
Primary ulcer of a reddish-brown colour; borders closely on the phagedenic character.
"North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826" by Various
The question then arises, what are the three primary colours?
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6" by Various
She used primary colours and never hesitated.
"Seeds of Pine" by Janey Canuck

In science:

An analogous procedure is fol lowed each time a is the tail of an arrow in ω1 and the head of an arrow in ω2 , with the roles of primary and secondary colours interchanged and factor −(−1)(i+j+1)(n−1) .
Double Poisson structures on finite dimensional semi-simple algebras
Then, using the intrinsic colours of MS stars in the infrared (Bessel & Brett 1988), we compute the magnitude difference between the primary and secondary in the K band (∆MK = 3.25), and derive the expected K -band photometry of the primary from the system’s photometry in a similar way.
A near-infrared interferometric survey of debris disc stars. II. CHARA/FLUOR observations of six early-type dwarfs
The colour scale shows the surface density of the postshock primary wind in g cm−2 .
3D modelling of the colliding winds in Eta Carinae - evidence for radiative inhibition
The survey of Beers et al. (1992) includes temperatures computed from UBV colours, and we observed eight of these stars. A handful of composite sdB+MS stars from the list of Allard et al. (1994), where their estimate of the temperature for the primary lie within the instability region, were also observed.
A survey for pulsating subdwarf B stars with the Nordic Optical Telescope
This ob ject was included in our sample based on the decomposition by Allard et al. (1994), who estimated the system to be an sdB+F9 composite from their Cousins BVRI photometry (V = 15.67, B–V = –0.17, V –R = –0.01, R–I = +0.06), and provided a colour temperature for the primary of 31.5 kK.
A survey for pulsating subdwarf B stars with the Nordic Optical Telescope