2 syllables: flexion, section.
3 syllables: advection, affection, brass section, collection, complexion, connection, convection, correction, cross section, defection, det
…ection, direction, dissection, ejection, election, erection, infection, inflection, injection, inspection, objection, perfection, plane section, projection, protection, reed section, reflection, rejection, selection, sports section, string section.
4 syllables: art collection, bye election, by election, by selection, circumspection, coin collection, conic section, disaffection, disconnection, disinfection, eye infection, golden section, imperfection, insurrection, interjection, intersection, introspection, loan collection, map collection, map projection, predilection, preelection, quarter section, recollection, redirection, reelection, reinspection, resurrection, rhythm section, sound reflection, stage direction, stamp collection, tax collection, to perfection, trade protection, trash collection, trumpet section.
5 syllables: bottle collection, caesarean section, change of direction, clarinet section, conic projection, focal infection, fungal infection, garbage collection, giving protection, house of correction, interconnection, mental rejection, overprotection, rental collection, right of election, sense of direction, signal detection, vertical section, vincent's infection, violin section, writ of election.
6 syllables: angle of reflection, conical projection, general election, horizontal section, mercator projection, mutual affection, natural selection, offering protection, point of intersection, primary election.
7 syllables: intravenous injection.
8 syllables: coefficient of reflection, opportunistic infection, urinary tract infection (MORE)