peripheral

po’zife-zat adj. [also spelt per i feral] of the petifery: as, *per1feral speed. periphery-line po‘c1fazz,iam n. [also spelt periferyzline] the line of the perrfery of a balloon. peripteral po’zipta-zol adj. of or pertainrng to the periptery; situated or occurring in the neighborhood of a wing or other aeroferl: as, the *peripteral system of flow. peripieral area, the area of the cre -section of a peripteral zone: as, the *peripteral areas of adjacent blades overlap. peripteral motion, the motion of the air or other fluid in the immediate vicinity of a moving wing or aeroferl; the forced wave or system of airzcurrents about a moving aeroferl. peripteral theory, theory regarding wing-form and the resultant fluid motions in the perrpteral zone; dectrrn as to the shapes of aerofetls and the systems of currents due to their motion thru the air or other fluid. peripteral zone, the zone or sfere of mfluence of an aeroferl; the tvact or region of fluid-fild Space which surrounds an aerofoerl. peripteroid pa’z1pta,ze1d adj. like the periptery; resembling that which occurs round about the wing or aeroferl of a natural or artzfrcial flyer: as, *perrptererd motion. periptery po’zipta-zz n. the region round about the wing, or in the vicinity of the aeroferl, of a natural or artificial flyer: as, an unstable *periptery. per spec to meter,pezspek’temi-tai n. a device for marking dimensions or distances en a fotograf, or perspectrv drawing, as an aid in interpretation or rn judging perspectiv. petaurist pz’tc:-zrst m. a flying-falanger; a flying-opo um; an Australian flying-squirrel; an acrobat; one of the Petaurist a. petrol ‘petrat, pz’troot ». a volatil inflammable Irqurd, one of the first products in the distillation of crude petroleum, used in the motors of automobiles and flyers; petroleum spirit; gasoline. petrol-depot ‘petrot,dii-po m. a depot or storehouse where petrol or gasoline is kept for the use of airships. petrol-tank ‘petrat,tenk 1. the gasolinectank of an airshrp. phase-curve ‘feez,ka:zv n. [also spelt phase curve, fasez curv] a curv or curvd line drawn thru the midzfase points, or points of greatest flight-veleczty, rn a series of fugerd curvs. photogram meter foto’gem-toz n. [also spelt foto gram meter] a fotografrec camera used in me suring the location and motion of clouds and in other surveyrng-work; a clouds camera. photogrammetry,fote’gem:-trr n. [also spelt foto gramme try] the use of the foto gram meter; the art of me suring foto grams or bird's-eye-view i satire taken from airships. piano-wire pi’ono,waic 1. 4. a kind of slender steel wire of perks styength such as used for the musical styrngs 1m pianos, eften empleyd in airshrpzconstzuction. 2. one of the stays or braces made of such wire, as in an aeroplane flying-machine.