15-letter words containing i, p, s, e, t
- overpessimistic — excessively pessimistic or negative in outlook
- overspeculation — the contemplation or consideration of some subject: to engage in speculation on humanity's ultimate destiny.
- pachymeningitis — inflammation of the dura mater of the brain and spinal cord
- packet-switched — packet switching
- packing density — a measure of the amount of data that can be held by unit length of a storage medium, such as magnetic tape
- paget's disease — Pathology. a chronic disease characterized by episodic accelerated bone resorption and growth of abnormal replacement bone, causing bone pain, deformation, fractures, and osteosarcoma; osteitis deformans.
- painter's colic — Pathology. lead poisoning causing intense intestinal pain.
- palaeomagnetism — the study of the fossil magnetism in rocks, used to determine the past configurations of the continents and to investigate the past shape and magnitude of the earth's magnetic field
- palaeomagnetist — a student of or expert in palaeomagnetism
- parasiticalness — the condition or characteristic of being parasitic
- parasympathetic — pertaining to that part of the autonomic nervous system consisting of nerves and ganglia that arise from the cranial and sacral regions and function in opposition to the sympathetic system, as in inhibiting heartbeat or contracting the pupil of the eye.
- parish register — the register of the christenings, marriages, and burials in a parish.
- pars intermedia — a small, somewhat cherry-shaped double structure attached by a stalk to the base of the brain and constituting the master endocrine gland affecting all hormonal functions in the body, consisting of an anterior region ((anterior pituitary) or (adenohypophysis)) that develops embryonically from the roof of the mouth and that secretes growth hormone, LH, FSH, ACTH, TSH, and MSH, a posterior region ((posterior pituitary) or (neurohypophysis)) that develops from the back of the forebrain and that secretes the hormones vasopressin and oxytocin, and an intermediate part (pars intermedia) derived from the anterior region but joined to the posterior region, that secretes the hormone MSH in lower vertebrates.
- parthenogenesis — development of an egg without fertilization.
- parti québécois — (in Canada) a political party in Quebec, formed in 1968 and originally advocating the separation of Quebec from the rest of the country
- partial eclipse — astronomy
- passenger train — railway train that carries people
- passport office — an office which issues passports
- past participle — a participle with past, perfect, or passive meaning, as fallen, sung, defeated; perfect participle: used in English and other languages in forming the present perfect, pluperfect, and passive and as an adjective.
- patria potestas — the power vested in the paterfamilias or head of the Roman family with respect to his wife, natural or adopted children, and agnatic descendants: title to family property is vested exclusively in the paterfamilias. Property acquired by a family member becomes family property, and no family member can enter into a transaction in his or her own right.
- pavement artist — sidewalk artist.
- pearly nautilus — nautilus (def 1).
- pedestrian mall — A pedestrian mall is the same as a pedestrian precinct.
- pematangsiantar — a city on NE Sumatra, in Indonesia.
- penal servitude — imprisonment together with hard labor.
- penetrativeness — the quality or condition of being penetrative
- pepin the short — ("Pepin the Short") died a.d. 768, king of the Franks 751–768 (father of Charlemagne).
- percussion tool — a power driven tool which operates by striking rapid blows: the power may be electricity or compressed air
- perfectionistic — a person who adheres to or believes in perfectionism.
- performing arts — dance, drama, music
- perfunctoriness — performed merely as a routine duty; hasty and superficial: perfunctory courtesy.
- periodic system — a system of classification of the elements based on the periodic law.
- personalization — to have marked with one's initials, name, or monogram: to personalize stationery.
- personification — the attribution of human nature or character to animals, inanimate objects, or abstract notions, especially as a rhetorical figure.
- pessimistically — pertaining to or characterized by pessimism or the tendency to expect only bad outcomes; gloomy; joyless; unhopeful: His pessimistic outlook kept him from applying for jobs for which he was perfectly qualified.
- peter of amiens — c1050–1115, French monk: preacher of the first Crusade 1095–99.
- petit bourgeois — a person who belongs to the petite bourgeoisie.
- petit serjeanty — serjeanty in which the tenant renders services of an impersonal nature to the king, as providing him annually with an implement of war, as a lance or bow.
- petty bourgeois — petit bourgeois
- phase-switching — a technique used in radio interferometry in which the signal from one of the two antennae is periodically reversed in phase before being multiplied by the signal from the other antenna
- phenakistoscope — an early form of a zoetrope in which figures are depicted in different poses around the edge of a disc. When the disc is spun, and the figures observed through the apertures around the edge of the disc, they appear to be moving
- phenomenalistic — the doctrine that phenomena are the only objects of knowledge or the only form of reality.
- phenomenologist — the study of phenomena.
- phosphocreatine — a compound, C 4 H 1 0 O 5 N 3 P, found chiefly in muscle, formed by the enzymatic interaction of an organic phosphate and creatine, the breakdown of which provides energy for muscle contraction.
- phosphorylative — of or relating to phosphorylation
- photo-secession — an association of photographers founded in New York City in 1902 by Alfred Stieglitz and Edward Steichen that advocated the development and public recognition of photography as a fine art.
- photodissociate — to split or break up molecules as a result of the absorption of photons
- photoelasticity — the phenomenon of double refraction of polarized light by a transparent substance under elastic stress, used to measure strain in elastic, transparent materials.
- photomicroscope — a microscope having an illuminator and a camera mechanism for producing a photomicrograph.
- photosensitizer — a drug, food, or other chemical that increases sensitivity to light and other visible photons