13-letter words containing a, r, s, h, i, n
- wordsworthian — William, 1770–1850, English poet: poet laureate 1843–50.
- world-shaking — of sufficient size or importance to affect the entire world: the world-shaking effects of an international clash.
- xanthochroism — a condition in certain animals, esp aquarium goldfish, in which all skin pigments other than yellow and orange disappear
- xiphiplastron — the fourth lateral plate of a turtle's plastron
- zarathustrian — Zoroaster.
- zinjanthropus — the genus to which Australopithecus boisei was formerly assigned.