18-letter words containing p, e, n, s, y, l
- population density — ratio: inhabitants to area
- post-revolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
- postviral syndrome — debilitating condition occurring as a sequel to viral illness
- pre-filled syringe — A pre-filled syringe is a disposable syringe that is supplied already loaded with the substance to be injected.
- presentation layer — (networking) The second highest layer (layer 6) in the OSI seven layer model. Performs functions such as text compression, code or format conversion to try to smooth out differences between hosts. Allows incompatible processes in the application layer to communicate via the session layer. Documents: ITU Rec. X.226 (ISO 8823), ITU Rec. X.216 (ISO 8822).
- psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
- psychotechnologist — a specialist in psychotechnology
- pulmonary embolism — the blockage of a pulmonary artery, often by a blood clot, that stops the flow of blood to the lungs and which can result in death if untreated
- repayment schedule — a document detailing the specific terms of a borrower's loan, such as monthly payment, interest rate, due dates etc
- sampling frequency — sample rate
- secondary syphilis — the second stage of syphilis, characterized by eruptions of the skin and mucous membrane.
- self-deprecatingly — in a self-deprecating manner
- silvery spleenwort — a fern, Diplazium pycnocarpon, of eastern North America, having fronds from 20 to 30 inches (50.8 to 76.2 cm) long on yellowish-green stalks.
- sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
- slow-motion replay — a showing again in slow motion of a sequence of action, esp of part of a sporting contest immediately after it happens
- solitary sandpiper — a North American sandpiper, Tringa solitaria, of inland wetlands, having a brownish-gray, white-spotted back and whitish underparts.
- television company — a company that broadcasts programmes by television
- the encyclopedists — the writers of the French Encyclopedia (1751-72) edited by Diderot and d'Alembert, which contained the advanced ideas of the period
- up someone's alley — suited to someone's tastes or abilities
- visible panty line — the line of someone's underwear which can be seen through trousers
- west puente valley — a town in SW California.
- western isles pony — a breed of large pony, typically grey, with a dense waterproof coat. The only surviving variety is the Eriskay pony
- whispering gallery — a space or gallery beneath a dome or broad arch in which low sounds produced at any of certain points are clearly audible at certain other distant points.
- wireless telephony — Now Rare. radiotelephony.