11-letter words containing t, o, p, y
- very pistol — a special pistol which fires coloured flares for signalling at night, esp at sea
- water poppy — a Brazilian, aquatic plant, Hydrocleys nymphoides, having yellow, poppylike flowers.
- x-ray photo — a picture produced by exposing photographic film to X-rays
- xanthophyll — lutein (def 1).
- xerophytism — (botany) The adaptation of plants to habitats where water is scarce.
- xylophonist — A person who plays or performs with the xylophone.
- yellow spot — Ophthalmology. macula (def 2b).
- yield point — the stress at which an elastic material under increasing stress ceases to behave elastically; under conditions of tensile strength the elongation is no longer proportional to the increase in stress
- yoghurt pot — a small, usually plastic, container that is used for selling yogurt and, when empty, is often used as a craft material
- youth group — an organization of young people, as for social purposes, usually under the sponsorship of a church, political organization, or the like.