2 syllables:
-ician, -ition, britian, clition, dishan, dish in, dition, fish in, fission, gricean, ician, ishan, ition, kishion, kishon, kition, lycian, mischen, mission, nisshin, pishon, titian, wischen, wishon, wish in, zischen, zwischen, dizon, his in, isn't, is in, jizan, kisan, krizan, mizzen, nisan, nisin, prison, risen, visine

3 syllables:
abwischen, addition, addmission, admission, agnition, ambicion, ambition, amission, ammissione, amphiscian, apician, attrition, audition, auffrischen, bannition, beautician, bullition, cilician, clinician, cognition, coition, comission, commission, commissione, condicion, condition, contrition, dedition, demission, dentition, desition, detrition, diffission, dimission, dismission, domitian, dormition, edition, emission, emmission, erfrischen, fortition, fruition, galician, glutition, hebrician, ignition, immission, inition, insition, kommission, largition, lenition, logician, magician, magicien, mccuistion, metrician, monition, mortician, multician, munition, musician, musicien, nolition, nutrician, nutrition, omission, optician, opticien, parishen, partition, patrician, perdition, permission, permistion, pernicion, petition, phenician, physician, politian, position, practician, prodition, punition, recission, reddition, redition, remission, rendition, rubrician, search mission, sedition, sexmission, simplician, sopition, sorbition, sortition, soumission, sublition, submission, sulpician, suspicion, symphysion, tactician, tactition, technician, technicion, tradition, transition, transmission, tuition, unition, vendition, volition, yousician, arisen, barbizon, emprison, erethizon, harisen, imprison, samisen, shamisen, stateprison, state prison, unprison

4 syllables:
abannition, abolition, absorbition, acquisition, acuition, adhibition, admonition, adposition, aesthetician, aglutition, air-condition, aircondition, ammunition, amolition, apparition, appetition, apposition, atomician, autoignition, avolition, bad condition, ballistician, bipartition, bohunician, circuition, co-edition, coadunition, coalition, cohibition, combat mission, commonition, communition, compartition, competition, composition, coopetition, cosmetician, daffynition, debulition, decommission, decondition, dedentition, definition, deglutition, delinition, demolition, denutrition, deperdition, deposition, depurition, detransition, dietician, dietitian, dimunition, discommission, disparition, disposition, disquisition, dissilition, dogmatician, ebullition, ekistician, electrician, electrition, emollition, epinician, epinicion, erudition, esthetician, evomition, exhibition, exilition, expedition, exposicion, exposition, expromission, exspuition, extradition, extramission, eye condition, field emission, fondkommission, foreign mission, futurition, good condition, heart condition, house physician, humanitian, illinition, imbibition, impedition, imposition, inanition, incumbition, inhibition, innutrition, inquisition, insubmission, intermission, interstition, intromission, intuition, in addition, in commission, in condition, in remission, irremission, jamesedition, jazz musician, koalition, komposition, linguistician, logistician, magnetician, malnutrition, malposition, manumission, mechanician, micturition, misedition, mistradition, mnemonician, new edition, nonadmission, nonphysician, nonrendition, nonsubmission, obdormition, obstetrician, ogganition, opposition, ordovician, partuition, parturition, pdiatrician, perquisition, phase transition, phonetician, photofission, pole-position, politician, politicien, politition, pontifician, postposition, preadmission, precognition, precondition, prefinition, preignition, premonition, premunition, preposition, preterition, pretermission, prohibition, proposition, readmission, rebullition, recognition, recommission, recondition, redhibition, rehibition, reignition, repartition, repetition, reposition, requisition, resilition, resubmission, retransmission, reunition, rhetorician, self-ignition, semantician, sepelition, seposition, sexposition, sex position, skin condition, stage technician, statistician, subaudition, subcommission, submonition, submunition, superstition, supposition, suraddition, symmetrician, syntactician, text edition, trade edition, tralatition, transposition, tribunician, tribunitian, tripartition, triparttition, unambition, unsuspicion, with ambition, zootechnician, reimprison, train to busan

5 syllables:
abligurition, academician, accrementition, anteposition, antiattrition, arithmetician, art exhibition, ballet position, bariatrician, biometrician, circumposition, cleanup position, cliometrician, co-opetition, colored audition, contraposition, control condition, counterposition, cybernetician, cycloaddition, decomposition, dental technician, derecognition, derequisition, dextroposition, diagnostician, dialectician, discomposition, disinhibition, dx-pedition, equipartition, exinanition, extraposition, face recognition, fairness commission, geometrician, geriatrician, high-definition, hydrostatician, hypernutrition, indisposition, informatician, informaticien, infraposition, interposition, in opposition, irrecognition, juxtaposition, lotus position, mathematician, metacognition, metaphysician, misdisposition, misexposition, misrecognition, neurotransmission, nondeposition, nonrecognition, nuclear fission, onomastician, out of commission, out of condition, overambition, overnutrition, oviposition, paediatrician, pediatrician, photoemission, photometrician, planning commission, preadmonition, predisposition, presupposition, price competition, price of admission, psychometrician, pyrotechnician, quadripartition, rate of attrition, ratihabition, reacquisition, recomposition, redefinition, redeposition, redisposition, reimposition, retrocognition, retroposition, road to perdition, sabermetrician, self-definition, self-recognition, self-repetition, semiotician, spaced repetition, speech-recognition, standard transmission, super-position, superaddition, supernutrition, superposition, syrophenician, taracahitian, theoretician, thermal emission, undernutrition, unintermission, voice-recognition, vomiturition, weather condition, zero-emission, zoning commission, newly arisen

6 syllables:
angular position, biostatistician, boundary condition, counterproposition, diplomatic mission, econometrician, election commission, essential condition, financial condition, geopolitician, hostile expedition, hunting expedition, infrared emission, limited-edition, limited edition, machine politician, military mission, neoplatonician, object recognition, photocomposition, photoinhibition, polar opposition, radio emission, resident physician, retrotransposition, search and destroy mission, search and rescue mission, super-imposition, superimposition, trigonometrician, writ of prohibition, san quentin state prison

7 syllables:
antiredeposition, atmospheric condition, automatic transmission, bioinformatician, biomathematician, dominance and submission, double decomposition, dramatic composition, economic condition, electrodeposition, explicit definition, favorable position, franklin's lost expedition, metamathematician, military commission, military position, missionary position, musical composition, mutual opposition, photodecomposition, population commission, quantum superposition, sanitary condition, secondary emission, staff selection commission, statistical commission, unit of ammunition, vector decomposition

8 syllables:
antipodal opposition, dictionary definition, environmental condition, experimental condition, geographic expedition, iatromathematician, independent politician, literary composition, military expedition, photoelectric emission, reciprocal inhibition, terra nova expedition, unfavorable position

9 syllables:
atomic energy commission, mathematical statistician, social development commission

10 syllables:
mass effect legendary edition

12 syllables:
economic and social council commission

2 syllables:
grison, frisson, listen, griffon, stiffen, vision, frisian, christen, driven, glisten, writhen, sivan, given, whitsun, gryphon, mithan, nissen, scission, sison

3 syllables:
prevision, envision, collision, division, incision, elision, decision, excision, parisian, rescission, forgiven, provision, night vision, revision, elysian, derision, precision, abscission, fradicin

4 syllables:
circumcision, imprecision, brussels griffon, indecision, supervision, split decision, streptolysin, short division, cell division, long division, bakke decision, belgian griffon, cross-division, form division, genus sison, line of vision, machine-driven, sales division, word division

5 syllables:
final decision

6 syllables:
reduction division, cellular division, judicial decision, phase of cell division, porcupine provision

7 syllables:
advertising division

8 syllables:
administrative division, territorial division