11-letter words containing a, t, r, o, p
- treaty port — any of the ports in China, Japan, or Korea through which trade with foreign countries was permitted by special treaty.
- trepidation — tremulous fear, alarm, or agitation; perturbation.
- trepidatory — characterized by trepidation
- triceratops — any of various dinosaurs of the genus Triceratops, of the late Cretaceous Period, having a bony crest on the neck, a long horn over each eye, and a shorter horn on the nose.
- tripersonal — consisting of or existing in three persons, as the Godhead.
- tripetalous — having three petals.
- trisepalous — having three sepals.
- troop train — a train used for transporting military personnel
- trophically — of or relating to nutrition; concerned in nutritive processes.
- trophoblast — the layer of extraembryonic ectoderm that chiefly nourishes the embryo or develops into fetal membranes with nutritive functions.
- trophoplasm — the cytoplasm that is involved in the nutritive processes of a cell
- tropicality — pertaining to, characteristic of, occurring in, or inhabiting the tropics, especially the humid tropics: tropical flowers.
- tropicalize — to make tropical, as in character or appearance.
- trypanocide — a drug or substance that kills trypanosomes
- trypanosoma — trypanosome.
- trypanosome — any minute, flagellate protozoan of the genus Trypanosoma, parasitic in the blood or tissues of humans and other vertebrates, usually transmitted by insects, often causing serious diseases, as African sleeping sickness in humans, and many diseases in domestic animals.
- tympaniform — resembling or having the form of a drum or drum head
- typographer — a person skilled or engaged in typography.
- typographia — matter relating to printing or printers
- typographic — of or relating to typography.
- unimportant — of much or great significance or consequence: an important event in world history.
- unoperative — having no use or effect; inoperative
- unpatriotic — of, like, suitable for, or characteristic of a patriot.
- upgradation — the process, state, or act of upgrading
- upper volta — former name of Burkina Faso.
- uranoplasty — a surgical operation to correct a defect of the palate or roof of the mouth
- usurpations — an act of usurping; wrongful or illegal encroachment, infringement, or seizure.
- utopianizer — an idealist
- vapor trail — contrail.
- vaporimeter — an instrument for measuring vapor pressure or volume.
- vapour bath — the act of bathing in vapour, formerly believed to have medicinal benefits
- volt-ampere — an electric measurement unit, equal to the product of one volt and one ampere, equivalent to one watt for direct current systems and a unit of apparent power for alternating current systems. Abbreviation: VA.
- water poppy — a Brazilian, aquatic plant, Hydrocleys nymphoides, having yellow, poppylike flowers.
- water power — the power of water used, or capable of being used, to drive machinery, turbines, etc.
- water vapor — a dispersion, in air, of molecules of water, especially as produced by evaporation at ambient temperatures rather than by boiling. Compare steam (def 2).
- waterproofs — Third-person singular simple present indicative form of waterproof.
- waterspouts — Plural form of waterspout.
- x-ray photo — a picture produced by exposing photographic film to X-rays
- xanthophore — a chromatophore containing a yellow pigment, as in some cold-blooded animals.
- zoanthropic — relating to or displaying zoanthropy
- zooparasite — any parasitic animal or protozoan.
- zooplankter — an individual animal or animallike organism in plankton.