prosthodonticsProsthetic dentistry: a specialty of dentistry concerned with the restoration or replacement of damaged or missing teeth or portions thereof.
prostitutorA person who prostitutes him- or herself or another person.
prostokvashaA thick soured milk product, similar to unsweetened yogurt but less sour, or kefir but thicker. In Russia or other former USSR republics, commercial and home-made prostokvasha comes in different varieties: "varenets" (варене́ц), "ryazhenka" (ря́женка), katyk/qatıq (каты́к), etc.
prostomiumThe portion of the head of an annelid situated in front of the mouth.
ProstoreA village in Zelenyi Pid settlement hromada, Kakhovka Raion, Kherson Oblast, Ukraine, founded in the 1930s, occupied by Russian forces since late February 2022.
protacanthopterygianOf or from the superorder Protacanthopterygii of ray-finned fish.
protachykininA peptide isolated from pheochromocytoma tissue.
protacrodontAny extinct shark of the order Protacrodontiformes
protacticGiving a previous narrative or explanation, as of the plot or personages of a play; introductory.
ProtactileA dialect of American Sign Language that communicates with touch.
protactinateAny oxyanion of protactinium; any salt containing such an anion.
protactiniumA chemical element (symbol Pa) with atomic number 91. A dense, silvery-gray actinide metal.
protagonA supposed crystalline molecule that forms the brain. The idea was proposed by Matthias Eugen Oscar Liebreich and Johann Ludwig Wilhelm Thudichum later disproved it, showing that the brain contains various lipids.
protaminationThe formation of protamines during spermatogenesis
protamineAny of various strongly basic proteins of relatively low molecular weight that are rich in arginine and are found associated especially with DNA in place of histone in the sperm cells of various animals (such as fish).
protandrogonousReferring to female forms of certain nematodes (Strongyloides stercoralis), in which male reproductive organs develop and disappear before female reproductive organs develop.
protectionismA system or policy of protecting the domestic producers of a product from foreign competition by imposing tariffs, quotas, duties or other barriers on importations.
protectionistOf or pertaining to protectionism, or an advocate thereof.
protectorSomeone who protects or guards, by assignment or on their own initiative.
protectoralOf or pertaining to a protector; protectorial.
protectorateGovernment by a protector; especially, The Protectorate: government of England, Scotland, and Ireland between 1653 and 1659 under the Lord Protector of the Commonwealth Oliver Cromwell, later his son Richard Cromwell.