19-letter words containing o, r, c, i, n
- wassermann reaction — a diagnostic test for syphilis using the fixation of a complement by the serum of a syphilitic individual.
- websters-dictionary — Informal. a dictionary of the English language, especially American English, such as Dictionary.com.
- white-winged scoter — a blackish North American duck, Melanitta deglandi, having a white patch on each wing.
- with flying colours — If you pass a test with flying colours, you have done very well in the test.
- within rocket range — able to be reached by rockets
- write-protect notch — a cut-out on a floppy disk that determines whether a disk is writable
- young conservatives — the youth section of the United Kingdom Conservative Party until 1998
- zenithal projection — a type of map projection in which part of the earth's surface is projected onto a plane tangential to it, either at one of the poles (polar zenithal), at the equator (equatorial zenithal), or between (oblique zenithal)