18-letter words containing p, r, i, v, a, t
- prepositional verb — a combination of verb and preposition, often with idiomatic meaning, differing from other phrasal verbs in that an object must always follow the preposition, as take after in The children take after their mother.
- preservation order — In Britain, a preservation order is an official order that makes it illegal for anyone to alter or destroy something such as an old building or an area of countryside.
- private enterprise — free enterprise (def 1).
- provably difficult — The set or property of problems for which it can be proven that no polynomial-time algorithm exists, only exponential-time algorithms.
- provascular tissue — procambium.
- provision merchant — a person or company in the business of retailing food and other provisions
- rapid eye movement — rapidly shifting, continuous movements of the eyes beneath closed lids during the stage of sleep characterized by dreaming.
- reactive component — the component in an alternating-current circuit that does not contribute power because it is 90° out of phase with the voltage or current.
- recovery operation — the process of locating and retrieving bodies, esp following an explosion or natural disaster
- representativeness — a person or thing that represents another or others.
- service department — a repair shop
- special relativity — the state or fact of being relative.
- supportive therapy — any treatment, such as the intravenous administration of certain fluids, designed to reinforce or sustain the physiological well-being of a patient
- the operative word — If you describe a word as the operative word, you want to draw attention to it because you think it is important or exactly true in a particular situation.
- thiruvananthapuram — a state in SW India: formerly the regions of Travancore and Cochin. 15,005 sq. mi. (38,836 sq. km). Capital: Thiruvananthapuram.
- to play favourites — to display favouritism
- to scrape a living — If you say that someone scrapes a living or scratches a living, you mean that they manage to earn enough to live on, but it is very difficult. In American English, you say they scrape out a living or scratch out a living.
- transylvanian alps — a mountain range in S Romania; a SW extension of the Carpathian Mountains. Highest peak: Mount Negoiu, 2548 m (8360 ft)
- vectorcardiography — a method of determining the direction and magnitude of the electrical forces of the heart.
- venture capitalist — funds invested or available for investment in a new or unproven business enterprise.
- videotape recorder — a device for recording television programs on magnetic tape for delayed transmission or for storage.
- visitor's passport — (formerly, in Britain) a passport, valid for one year and for certain countries only, that could be purchased from post offices