protherapeiaA figure of speech used to secure indulgence or conciliate an audience before saying something potentially shocking, offensive, or difficult to accept.
prothesisThe prepending of phonemes at the beginning of a word without changing its morphological structure, as in Spanish esfera from Greek (via Latin) sphaera (“sphere”) (without prothesis the word would have become *sfera).
protirementEarly retirement from professional work with the positive idea of pursuing something more fulfilling.
protistAny of the eukaryotic, usually unicellular organisms—including protozoans, slime molds and some algae—historically grouped into the kingdom Protista (or Protoctista), now distributed over several clades; any eukaryote that is not a plant, animal or fungus.
protistalRelating to, or characteristic of protists
protoacademicThat develops (or may develop) into an academic form
protoadditiveHaving the property that the result when applied to x + y is less than or equal to the sum of the result when applied to x plus the result when applied to y, for all values x and y in the domain.
protoalkaloidA precursor of an alkaloid, typically one that is not heterocyclic
protoanalysisIn the practice of the Arica School, the analysis of the complete human being, from anatomy and physiology up to higher consciousness and enlightenment.
protobiologistAn early biologist; a practitioner of protobiology.
protobiologyThe early study of biology, before it became a rigorous established discipline.
protobiontAn aggregation of organic molecules, surrounded by a membrane, that abiotically coalesces into resemblances of living matter; thought to be the precursors of prokaryotic cells
protobirdAny of several extinct animals proposed as an evolutionary link between fossil reptiles and fossil birds; a proavian.
protoblattoidA member of the extinct insect order Protoblattoidea.
protoboardA board, having a matrix of small holes to which components may be attached without solder, used for the temporary construction and testing of electrical and electronic circuits
protobranchAny bivalve mollusc of the subclass Protobranchia
protobranchiateRelating to, or characteristic of bivalve molluscs of the subclass Protobranchia
protobromideAny of a series of bromides of a particular metal that has the fewest atoms of bromine per molecule
protobrosisThe first meal after a complete fast; the meal that ends or breaks a fast.
protobulgeA group of stars that accumulate into a galactic bulge.
protocadherinAny of several polypeptides that are fragments of cadherin
protocanonicalDescribing the first (authorized) canon of books of scripture.