Words starting with P, then S, then I, then O, ending in N
122 words fit this spine. They're all listed below. They start with P, end with N, and contain S then I then O in that order in between — not necessarily side by side.
- pacemaker doesn't fit: it starts with P but ends with R, not N.
- pantheon doesn't fit: it has the right ends but no S in the middle.
- piston doesn't fit: it has every letter of PSION but they don't appear in order inside it.
7-letter words
passion, pension, plosion, pulsion
8-letter words
position, positron, psilocin
9-letter words
perfusion, persimmon, pervasion, postilion, precision, prelusion, prevision, profusion, prolusion, provision, pulsation
10-letter words
pepsinogen, percussion, permission, persuasion, perversion, pincushion, possession, postillion, postprison, precession, preclusion, prehension, pretension, procession, profession, propulsion, protrusion, psilocybin
11-letter words
passivation, persecution, personation, plasminogen, posttension, postulation, preinvasion, preposition, presumption, progression, proposition, prosecution, prostration, pustulation
12-letter words
perspiration, postabortion, postelection, postposition, preadmission, predigestion, prerecession, prescription, preselection, presentation, preservation, proscription, prostitution, protestation
13-letter words
perseveration, photoemission, podsolization, postinfection, postinjection, postisolation, postrecession, precombustion, prepossession, pretelevision, pretermission
14-letter words
parasitization, pasteurization, plasticization, polymerisation, postamputation, postconception, postconvention, postdepression, postgraduation, postliberation, postproduction, predestination, predisposition, pressurization, presupposition, pseudoscorpion
15-letter words
personalization, personification, phosphatization, phosphorylation, postdevaluation, postinoculation, postirradiation, postpollination, poststimulation, posttransfusion, postvaccination, preregistration, procrastination, prognostication, proselytization, prussianization, pseudepigraphon, psychohistorian
16-letter words
photocomposition, photorespiration, polycondensation, postresurrection, prestidigitation
17-letter words
photodissociation
18-letter words
photodecomposition, photosensitization, polyesterification
19-letter words
photodisintegration, professionalization
20-letter words
photophosphorylation, pseudosophistication
Where this pattern came from
Try today's puzzle
Every word above follows this rule — see if you can find them under a clock.
How the rule works