13-letter words containing p, r, a, c, t, i
- nonpracticing — not currently practicing one's profession, religion, etc.: a nonpracticing physician.
- nonpractising — of or relating to a person who no longer observes or pursues his or her religious faith
- notary public — a public officer or other person authorized to authenticate contracts, acknowledge deeds, take affidavits, protest bills of exchange, take depositions, etc.
- opisthobranch — any gastropod mollusk of the order Opisthobranchia, as the sea slugs, sea butterflies, and sea hares, characterized by a vestigial or absent mantle and shell and two pairs of tentacles.
- oprahfication — the perceived increase in people’s desire to discuss their emotions or personal problems, attributed to the influence of confessional television programmes
- optical crown — an optical glass of low dispersion and relatively low refractive index. It is used in the construction of lenses
- optical drive — optical disk drive
- optical fiber — optical fibre
- optical fibre — (communications) (fibre optics, FO, US "fiber", light pipe) A plastic or glass (silicon dioxide) fibre no thicker than a human hair used to transmit information using infra-red or even visible light as the carrier (usually a laser). The light beam is an electromagnetic signal with a frequency in the range of 10^14 to 10^15 Hertz. Optical fibre is less susceptible to external noise than other transmission media, and is cheaper to make than copper wire, but it is much more difficult to connect. Optical fibres are difficult to tamper with (to monitor or inject data in the middle of a connection), making them appropriate for secure communications. The light beams do not escape from the medium because the material used provides total internal reflection. See also FDDI, Optical Carrier n, SONET.
- orchestra pit — musicians' seating in front of stage
- orchestra-pit — a group of performers on various musical instruments, including especially stringed instruments of the viol class, clarinets and flutes, cornets and trombones, drums, and cymbals, for playing music, as symphonies, operas, popular music, or other compositions.
- orthocephalic — having a medium or intermediate relation between the height of the skull and the breadth or length.
- orthoepically — In terms of correct pronunciation.
- orthopaedical — Pertaining to orthopaedics; characteristic of orthopaedia.
- packet driver — (networking) IBM PC local area network software that divides data into packets which it routes to the network. It also handles incoming data, reassembling the packets so that application programs can read the data as a continuous stream. Packet drivers provide a simple, common programming interface that allows multiple applications to share a network interface at the data link layer. Packet drivers demultiplex incoming packets among the applications by using the network media's standard packet type or service access point field(s). The packet driver provides calls to initiate access to a specific packet type, to end access to it, to send a packet, to get statistics on the network interface and to get information about the interface. Protocol implementations that use the packet driver can coexist and can make use of one another's services, whereas multiple applications which do not use the driver do not coexist on one machine properly. Through use of the packet driver, a user could run TCP/IP, XNS and a proprietary protocol implementation such as DECnet, Banyan's, LifeNet's, Novell's or 3Com's without the difficulties associated with pre-empting the network interface. Applications which use the packet driver can also run on new network hardware of the same class without being modified; only a new packet driver need be supplied. There are several levels of packet driver. The first is the basic packet driver, which provides minimal functionality but should be simple to implement and which uses very few host resources. The basic driver provides operations to broadcast and receive packets. The second driver is the extended packet driver, which is a superset of the basic driver. The extended driver supports less commonly used functions of the network interface such as multicast, and also gathers statistics on use of the interface and makes these available to the application. The third level, the high-performance functions, support performance improvements and tuning.
- packing crate — A packing crate is a large wooden box in which things are put so that they can be stored or taken somewhere.
- paediatrician — A paediatrician is a doctor who specializes in treating sick children.
- palaeocrystic — consisting of former glacial formation
- paleotropical — belonging or pertaining to a geographical division comprising the Ethiopian and Oriental regions.
- pantisocratic — relating to pantisocracy
- para-centesis — puncture of the wall of a cavity to drain off fluid.
- parallelistic — of, relating to, or of the nature of a parallelism.
- parasitically — of, relating to, or characteristic of parasites.
- parasynthetic — the formation of a word by the addition of a derivational suffix to a phrase or compound, as of greathearted, which is great heart plus -ed.
- parenthetical — of, pertaining to, noting, or of the nature of a parenthesis: several unnecessary parenthetic remarks.
- parietal cell — any of the cells in the mucous membranes of the stomach that secrete hydrochloric acid.
- parti-colored — having different colors in different areas or patches; variegated: a parti-colored dress.
- participantly — in a participant manner
- participating — to take or have a part or share, as with others; partake; share (usually followed by in): to participate in profits; to participate in a play.
- participation — an act or instance of participating.
- participative — to take or have a part or share, as with others; partake; share (usually followed by in): to participate in profits; to participate in a play.
- participatory — to take or have a part or share, as with others; partake; share (usually followed by in): to participate in profits; to participate in a play.
- particle beam — Physics. a concentrated stream of particles, as electrons, neutrons, or protons, generated for studying particle interactions, nuclear structure, crystal structure, etc.
- particleboard — a boardlike building material made by compressing sawdust or wood particles with a resin binder
- particularism — exclusive attention or devotion to one's own particular interests, party, etc.
- particularity — the quality or state of being particular.
- particularize — to make particular.
- party machine — the internal organization of a political party, which decides its policies and directs its activities
- past historic — the simple past
- paternalistic — the system, principle, or practice of managing or governing individuals, businesses, nations, etc., in the manner of a father dealing benevolently and often intrusively with his children: The employees objected to the paternalism of the old president.
- patriarchally — of or relating to a patriarch, the male head of a family, tribe, community, church, order, etc.: my father's conservative, patriarchal ways.
- patrifocality — the system or fact of being patrifocal
- patriotically — of, like, suitable for, or characteristic of a patriot.
- peak district — a region of N central England, mainly in N Derbyshire at the S end of the Pennines: consists of moors in the north and a central limestone plateau; many caves. Highest point: 727 m (2088 ft)
- pearl tapioca — a food substance prepared from cassava in granular, flake, pellet (pearl tapioca) or flour form, used in puddings, as a thickener, etc.
- pedantocratic — of or relating to pedantocracy
- peirastically — in a peirastic manner
- perchlorinate — to combine with the maximum proportion of chlorine.
- perfectionate — to perfect; to make perfect
- perilymphatic — the fluid between the bony and membranous labyrinths of the ear.