16-letter words containing a, n, i, m
- warminster broom — a European shrub, Cytisus praecox, of the legume family, having yellowish-white or yellow, pealike flowers.
- weighing machine — large measuring scales
- wheel animalcule — a rotifer.
- willem-alexander — full name Willem-Alexander Claus George Ferdinand. born 1967, king of the Netherlands from 2013
- william hamilton — (person) A mathematician who posed Hamilton's problem.
- william mckinley — William, 1843–1901, 25th president of the U.S. 1897–1901.
- willow ptarmigan — a ptarmigan, Lagopus lagopus, of arctic and subarctic regions of the New and Old Worlds, having brown, mottled plumage in summer and white plumage in winter.
- windowless monad — (in the philosophy of Leibniz) a monad having no direct causal or perceptual relation with any other monad.
- withdrawing room — a room to withdraw or retire to; drawing room.
- woolly manzanita — a tree or shrub, Arctostaphylos tomentosa, of the heath family, common from British Columbia to California, having broad leaves, with the underside covered with white hairs, and white flowers.
- yeoman's service — good, useful, or workmanlike service: His trusty sword did him yeoman's service.
- yield management — the process of frequently adjusting the price of a product in response to various market factors, as demand or competition.
- zagros mountains — a mountain range in S Iran: has Iran's main oilfields in its W central foothills. Highest peak: Zard Kuh, 4548 m (14 920 ft)
- zygosporangium's — a sporangium that bears a zygospore.