Thanks for your help everyone, and thanks for your welcome. It's been excellent to read this message board, not just for the information, but because everyone seems to take care with spelling, grammar, typos, etc!! (Which I expected, of course). Most people on the message boards that I usually go to don't seem to care, using, (I'm sure), the "you know what I mean" defence; something I've always hated! :-)
A rhyming dictionary is obvious, but something I've never actually thought of asking for at a bookstore!! Have to check it out. I would use it for poems, but also in my work as a graphic designer. Having words that rhyme, or that are similar/related, is usually a great way to create a catchy phrase, or illustrate an idea.
Thanks again,
/silen
Silen, as an example of what a good rhyming dictionary has, here are some of the "-AY-shun" words you requested, as taken from Whitfield's Untiversity Rhyming Dictionary. Numbers indicate the number of syllables.
The list continues for a bit more than eight columns; the text below is just the first column's worth.
2. nation, ration station 3. cibation, libation, limbation, jobation, probation, placation, vacation, peccation, plication, sulcation, truncation, location, vocation, furcation, piscation, gradation, foundation, laudation, sudation, creation, legation, ligation, rogation, purgation, jugation, striation, alation, halation, ablation, oblation, sublation, elation, delation, gelation, relation, velation, deflation, sufflation, inflation, conflation, dilation, vallation, illation, collation, prolation, cremation, sigmation, himation, gemmation, commation, summation, formation, planation, andation, enation, agnation, signation, cognation, domnation, conation, donation, phonation, pronation, lunation, libration, vibration, hydration, ceration, spheration, mguration, liration, oration, moration, nitration, titration, filtration, curation, duration, neuration, gyration, cessation, causation, pausation, natation, jactation, lactation, tracation, dictation, nictation, citation, saltation, peltation, cantation, plantation, dentation, mentation, tentation, floatation, notation, potation, rotation, quotation, votation, ccaptation, septation, flirtation, hortation, curtation, substation, gestation, testation, crustation, gustation, guttation, lutaation, mmuation, nutation, putation, equation, lavation, ovation, novation, starvation, nervation, servation, curvation, laxation, taxation, vexation, fixation, luxation, fluxation, 4. reprobation, approbation, perturbation, accubation, incubation, titubation, intubation, desiccation, exsiccation, deprecation, imprecation, comprecation, albication, radication, abdication, dedication, medication, predication, indication, vindication, syndication, replication, triplication, implication, complication, application, supplication, duplication, explication, varication, fabrication, imbrication, lubrication, rubrication, lorication, extrication, vesication, mastication, rustication, toxication, allocation, collocation ...