plural of 57-cell

plural of 501(c)(3)

Of telephone numbers dialed in North America, widely used for fictional numbers in television shows, films, and other media.

(aviation, military, historical, US) The original designation of the Curtiss P-60.

plural of XP-53

(US, taxation, organizations) An organization that complies with section 501(c)(4) of the U.S. federal tax code. A non-profit organization exempt from some federal income taxes, due to being dedicated social welfare purposes.

(US, taxation, organizations) An organization that complies with section 501(c)(3) of the U.S. federal tax code. A non-profit organization exempt from some federal income taxes, due to being dedicated to charitable, religious, educational, scientific, public safety, promotion of amateur sport at the national or international level, prevention of cruelty to women or children or animals, or literary purposes.

plural of 501(c)(4)

Alternative form of fifty-fifty

Alternative form of fifty-fifty