Some folks think that an adjective formed by a number + a hyphen + a noun should be plural.
15-components equation of state
Yes, the EOS has 15 components, and that’s plural, but if you make a hyphenated adjective out of it, you leave the “S” off. I don’t know why; that’s just how it is.
15-component equation of state
Other Good Examples:
Texas two-step dance
Two-piece bathing suit
Two-ply paper towels
Which brings me to Three Dog Night, the singing group famous for “Jeremiah Was a Bullfrog / Joy to the World.”
According to the official account included in the CD set Celebrate: The Three Dog Night Story, 1965–1975, a band member’s girlfriend suggested the name after reading a magazine article about indigenous Australians who on cold nights would sleep in a hole in the ground embracing a dingo, a native wild dog. On colder nights they would sleep with two dogs, and if the night were freezing, it was called a “three dog night.”
Well, it should have been hyphenated, but at least they left the “S” off of “dog.”
Profound Quote of the Day:
“I’ve always said money may buy you a fine dog, but only love can make it wag its tail.”
– Kinky Friedman, Texas musician and humorist and perennial candidate for Governor, b. 1944