radiate – As an adjective, it means having rays or parts coming out of a center, from Latin radius, “ray, spoke.” More…
radio wave – Travels like rays of light, so it takes its name from Latin radius, “spoke of a wheel; ray of light.” More…
sol-fa – The sol-fa syllables are doh, ray, mi, fah, sol, lah, te—for the notes of the major musical scale. More…