13-letter words containing a, e, p, y, o
- oropharyngeal — the part of the pharynx between the soft palate and the upper edge of the epiglottis.
- orthoepically — In terms of correct pronunciation.
- palaeobiology — the study of fossil plants and animals
- palaeocrystic — consisting of former glacial formation
- palaeoecology — the study of fossil animals and plants in order to deduce their ecology and the environmental conditions in which they lived
- palaeontology — Palaeontology is the study of fossils as a guide to the history of life on Earth.
- palaeozoology — the study of fossil animals
- paleethnology — (formerly) the branch of ethnology concerned with the earliest or most primitive human societies.
- paleopedology — the branch of pedology dealing with the soils of past geologic ages.
- pancreatotomy — incision of the pancreas.
- parasyntheton — a word formed by parasynthesis; for example, kind-hearted
- parthenocarpy — the production of fruit without fertilization of an egg in the ovary.
- party-colored — having different colors in different areas or patches; variegated: a parti-colored dress.
- pathogenicity — the disease-producing capacity of a pathogen.
- pay a pension — If a company or government pays a pension to someone, it provides them with money because they have reached a certain age.
- pay attention — be attentive
- pay one's way — to settle (a debt, obligation, etc.), as by transferring money or goods, or by doing something: Please pay your bill.
- pedagogically — of or relating to a pedagogue or pedagogy.
- penalty point — an endorsement on a driving licence due to a motoring offence
- pencil crayon — coloured pencil
- penobscot bay — an inlet of the Atlantic in S Maine. 30 miles (48 km) long.
- pensacola bay — an inlet of the Gulf of Mexico, in NW Florida. About 30 miles (48 km) long.
- peptidoglycan — a polymer, consisting of polysaccharide and peptide chains, responsible for the structure of the cell wall of bacteria
- peregrinatory — tending to peregrinate; relating to or characteristic of a traveller
- periodontally — with respect to periodontal tissue
- perissodactyl — having an uneven number of toes or digits on each foot.
- petrophysical — relating to the analysis of the constitution and characteristics of rocks
- pharyngectomy — excision of part or all of the pharynx.
- pharyngoscope — an instrument for inspecting the pharynx.
- phenomenality — highly extraordinary or prodigious; exceptional: phenomenal speed.
- phony disease — a disease of peaches, characterized by dwarfing, dark-green leaves, premature leafing and flowering, and the production of reduced numbers of small fruit, caused by a virus, Nanus mirabilis.
- phony-baloney — nonsense; baloney.
- phosphorylase — any enzyme, occurring widely in animal and plant tissue, that in the presence of an inorganic phosphate catalyzes the conversion of glycogen into sugar phosphate.
- phosphorylate — to introduce the phosphoryl group into (an organic compound).
- photo gallery — display of collected photographs
- photosynthate — a compound formed by photosynthesis.
- phreatophytic — of, possessing the properties of, or relating to a phreatophyte
- phrygian mode — an authentic church mode represented on the white keys of a keyboard instrument by an ascending scale from E to E.
- physiotherapy — physical therapy.
- phytochemical — Also called phytonutrient. any of various bioactive chemical compounds found in plants, as antioxidants, considered to be beneficial to human health.
- phytopathogen — an organism that causes disease in plants
- phytoplankter — a minute organism which constitutes part of phytoplankton
- plagiocephaly — a deformity of the skull in which one side is more developed in the front, and the other side is more developed in the rear.
- plane journey — a journey made by flying in an aeroplane
- plastic money — credit cards, used instead of cash
- platonic year — a period of about 26,000 years, equal to the time required for a complete revolution of the equinoxes.
- play for time — a dramatic composition or piece; drama.
- play the fool — behave in a silly way
- plethysmogram — the recording of a plethysmograph.
- pneumatolysis — the process by which rocks are altered or minerals and ores are formed by the action of vapors given off by magma.