3 syllables:
-genesis, genesis, venosus

4 syllables:
adenosis, agenesis, digenesis, dysgenesis, eugenesis, noogenesis, oogenesis, pangenesis, parenesis, regenesis, syngenesis, transgenesis

5 syllables:
aerogenesis, amphigenesis, anagenesis, androgenesis, autogenesis, biligenesis, biogenesis, blastogenesis, book of genesis, cacogenesis, caenogenesis, cainogenesis, catagenesis, cenogenesis, chondrogenesis, cladogenesis, clastogenesis, cosmogenesis, cyclogenesis, cytogenesis, diagenesis, diplogenesis, ectogenesis, endogenesis, epigenesis, erogenesis, ethnogenesis, exogenesis, fibrogenesis, frontogenesis, gamogenesis, glucogenesis, glycogenesis, gynogenesis, haemogenesis, hemogenesis, henogenesis, histogenesis, homogenesis, hylogenesis, hypergenesis, hypnogenesis, hypogenesis, isogenesis, kainogenesis, kenogenesis, ketogenesis, lactogenesis, lipogenesis, lithogenesis, lymphadenosis, lysogenesis, merogenesis, metagenesis, microgenesys, mitogenesis, monogenesis, morphogenesis, mutagenesis, myogenesis, mythogenesis, neogenesis, neurogenesis, noegenesis, nosogenesis, oncogenesis, ontogenesis, orogenesis, orthogenesis, ovigenesis, paedogenesis, palingenesis, paragenesis, pathogenesis, pedogenesis, perigenesis, petrogenesis, phenogenesis, phylogenesis, phytogenesis, polygenesis, psychogenesis, pyogenesis, schismogenesis, schizogenesis, sega genesis, sporogenesis, taphrogenesis, thermogenesis, virogenesis, xenogenesis, zygogenesis, zymogenesis

6 syllables:
abiogenesis, abiogenisis, achondrogenesis, adipogenesis, agamogenesis, amelogenesis, amniogenesis, amylogenesis, angiogenesis, anthropogenesis, atherogenesis, baryogenesis, bibliogenesis, carcinogenesis, cardiogenesis, cariogenesis, cementogenesis, crystallogenesis, cyanogenesis, dentinogenesis, dynamogenesis, electrogenesis, embryogenesis, epeirogenesis, fibrillogenesis, gametogenesis, geneagenesis, gluconogenesis, haematogenesis, hematogenesis, heterogenesis, iatrogenesis, idiogenesis, immunogenesis, karyogenesis, kinetogenesis, leukemogenesis, library genesis, melanogenesis, methanogenesis, myelogenesis, neuranagenesis, odontogenesis, organogenesis, osteogenesis, parthenogenesis, pyretogenesis, salutogenesis, sociogenesis, spermatogenesis, spermiogenesis, steroidogenesis, symbiogenesis, synaptogenesis, teratogenesis, tornadogenesis, tumorigenesis, tumourigenesis, vasculogenesis, vitellogenesis

7 syllables:
anticyclogenesis, folliculogenesis, gluconeogenesis, glyconeogenesis, leucocytogenesis, megasporogenesis, microsporogenesis, myelinogenesis, photomorphogenesis

8 syllables:
anti-angiogenesis, antiangiogenesis, etiopathogenesis, glyceroneogenesis

2 syllables:
phthisis

3 syllables:
auxesis, benefits, clematis, delonix, dendraspis, ecesis, ecrevisse, emphasis, feminists, meleagris, nemesis, pedesis, prejudice, selflessness, separatists, specialists

4 syllables:
executrix, marsh clematis, parenthesis, supremacists

5 syllables:
curly clematis, fundamentalists, genus clematis, golden clematis, mountain clematis, purple clematis, scarlet clematis

6 syllables:
autocatalysis