11-letter words containing p, o, i, r
- thyrotropin — an anterior pituitary hormone that regulates the activity of the thyroid gland.
- tidal power — the use of the rise and fall of tides involving very large volumes of water at low heads to generate electric power
- timbrophily — the love of stamps; stamp collecting
- tomographic — relating to tomography
- top-ranking — A top-ranking person is someone who has a very high rank or status in a particular organization or field of activity.
- topdressing — an application of fertiliser to soil
- topocentric — as seen from, with reference to, or coordinating to a point on the surface of the earth
- topographic — the detailed mapping or charting of the features of a relatively small area, district, or locality.
- torpedinous — of, relating to, or resembling a torpedo
- torrey pine — a rare pine tree, Pinus torreyana, having a rounded crown of branches, growing in a limited area on the southern coast of California.
- torsiograph — a graph indicating vibrating movements
- traffic cop — a police officer who directs the flow of traffic, usually at an intersection.
- traitorship — a person who betrays another, a cause, or any trust.
- transphobia — unreasoning hostility, aversion, etc., toward transgender people.
- transposing — the act of transposing
- trapeziform — formed like a trapezium.
- trapezoidal — Geometry. a quadrilateral plane figure having two parallel and two nonparallel sides. British. trapezium (def 1b).
- 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.
- trichonymph — a flagellated protozoan of the genus Trichonympha that lives in the intestine of wood-eating termites, transforming the cellulose in the wood into soluble carbohydrates that can be utilized by the insect.
- trimorphism — Zoology. the occurrence of three forms distinct in structure, coloration, etc., among animals of the same species.
- tripersonal — consisting of or existing in three persons, as the Godhead.
- tripetalous — having three petals.
- triphibious — employing or involving land, naval, and air forces in a combined operation.
- triphyllous — having three leaves.
- triple bond — a chemical linkage consisting of three covalent bonds between two atoms of a molecule, represented in chemical formulas by three lines or six dots, as CH≡CH or CH⋮⋮CH.
- triptolemus — a favorite of Demeter and the inventor of the plow and patron of agriculture, connected with the Eleusinian mysteries.
- trisepalous — having three sepals.
- trispermous — having three seeds.
- troop train — a train used for transporting military personnel
- trophically — of or relating to nutrition; concerned in nutritive processes.
- trophozoite — a protozoan in the metabolically active growth stage.
- trophy wife — the young, often second, wife of a rich middle-aged man.
- tropic bird — any of several web-footed seabirds of the family Phaethontidae, chiefly of tropical seas, having white plumage with black markings and a pair of greatly elongated central tail feathers.
- 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.
- tropomyosin — a protein in muscle tissue that works with troponin to control the process by which actin and myosin interact to produce muscle contraction
- trothplight — engagement to be married; betrothal.
- trypanocide — a drug or substance that kills trypanosomes
- trypsinogen — a precursor of trypsin that is secreted by the pancreas and is activated to trypsin in the small intestine.
- turcopolier — during the Crusades, an officer in charge of a section of turcopoles
- turnip moth — a common noctuid moth, Agrotis segetum, drab grey-brown in colour, the larvae of which feed on root crops and brassica stems
- two-pointer — a shot from inside or on the three point line, worth two points if it is made
- tympaniform — resembling or having the form of a drum or drum head
- typographia — matter relating to printing or printers
- typographic — of or relating to typography.
- tyroglyphid — a tick or mite of the family Tyroglyphidae
- unapproving — expressing disapproval or displeasure
- unimportant — of much or great significance or consequence: an important event in world history.