2 syllables:
vicia

3 syllables:
abelia, baptisia, reptilia, sepia, prinia, stevia, sweetpea, tenia

4 syllables:
erwinia, actinia, karelia, artemia, anemia, garcinia, eugenia, paresthesia, sapremia, leukemia, photinia, armenia, anglophilia, monilia, sardinia, slovenia, synesthesia, bauhinia, uremia, robinia, vaccinia, crocodilia, necrophilia, amenia, emilia, mysophilia, albizia, albizzia, alpinia, anaemia, asthenia, blephilia, boykinia, brasenia, dillenia, gleichenia, gloxinia, halenia, jacquinia, kirghizia, lasthenia, leukaemia, lucilia, luscinia, marsilea, puccinia, salvinia, sapraemia, swietinia, toxaemia, toxemia, uraemia, ursinia, xanthemia

5 syllables:
sarracenia, haemophilia, thrombasthenia, thalassemia, anoxemia, azotemia, academia, leukopenia, leucopenia, hemophilia, neutropenia, bacteremia, acidemia, ketonemia, dionysia, catamenia, lacertilia, schizophrenia, paraplegia, neurasthenia, quadriplegia, hemiplegia, hebephrenia, alkalemia, amphisbaenia, aphrodisia, apolemia, aquilegia, azotaemia, bacteriemia, caesalpinia, caladenia, calandrinia, calystegia, cystoplegia, dipladenia, escherichia, griselinia, gymnadenia, hugueninia, hyperaemia, hyperemia, lagerstroemia, lepechinia, nyctaginia, paramecia, paraphrenia, piptadenia, pterocnemia, remilegia, rhodymenia, rosellinia, sclerotinia, septicaemia, septicemia, thalassaemia, thrombopenia, tularaemia, tularemia

6 syllables:
carotenemia, hypovolemia, hyperglycemia, hypoglycemia, pancytopenia, acetonemia, anaphrodisia, argyrotaenia, aristotelia, bacteriaemia, hyperlipaemia, hyperlipemia, misocainea, polycythemia, sideropenia

7 syllables:
hyperlipidemia, thrombocytopenia, analbuminemia, enterotoxemia, hyperlipidaemia

8 syllables:
granulocytopenia, afibrinogenemia, angiohemophilia

9 syllables:
hyperbilirubinemia, agammaglobulinemia

10 syllables:
abetalipoproteinemia, hypogammaglobulinemia

11 syllables:
hypobetalipoproteinemia