Here's what rhymes with planorbiform.
form farm harm forme perform warm charm storm norm swarm disarm deform dorm reform alarm inform forearm firearm multiform preform rearm overarm uniform conform lukewarm nonfarm outperform yardarm rewarm transform chloroform fusiform nonuniform cruciform underarm vermiform schoolmarm misinform cuneiform thunderstorm Words that almost rhyme with planorbiform
horn psalm thorn shorn born corn borne torn worn barn warn scorn sworn yarn morn mourn darn porn tarn lorn adorn forlorn forborne timeworn unborn reborn outworn forewarn unworn lowborn firstborn stillborn unicorn waterborne careworn forsworn lovelorn peppercorn foresworn sweetcorn homme vom som com calm bomb palm mom bom balm nom rom tom dom mam suam pom iamb quam prom qualm salaam becalm aplomb cardamom pogrom embalm consomme firebomb intercom supermom