English Words: P
46,516 words · Page 341 of 931
An electronic component whose resistance is inversely proportional to the intensity of incident light.
Light-dependent release of carbon dioxide and uptake of oxygen in photosynthetic organisms as an unavoidable side reaction of photosynthesis.
Synonym of retinoscope, but especially one that uses a particular form of light (such as infrared)
Describing any compound or system that can exist in two forms, and can be changed from one to the other by the appropriate influence of light
The initial compound formed when rhodopsin is irradiated with light; it immediately produces bathorhodopsin
An acid, C₁₅H₂₂O₅, produced by long exposure to sunlight of santonin in acetic acid solution.
photochemical or photolytic saturation (a situation in which more light has no additional effect)
A device which photographically records the gamma rays passing through tissue that has been injected with a radioactive material.
Any of various instruments employed for the observation of light, luminous effects, or photographs.
A process in which, by means of a number of photographs simultaneously taken from different points of view on the same level, rough models of the figure or bust of a person or animal may be made quickly.
A device used to measure the particle size distribution during photosedimentation
A technique in which an aligned subset of sample molecules is selected by an exciting light beam.
Spelling & Dictionary Insight
The English alphabetical index for the letter P contains 46,516 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 931 pages, and you are currently viewing page 341. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.
On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.
For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "P" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.