Here's what rhymes with phtosynthesis.
photosynthesis Words that almost rhyme with phtosynthesis
syphilis viciousness officiousness chrysalis dissidence crystallise auspiciousness deliciousness hypnotists singlets judiciousness perniciousness bishoprics ringlets ricochets revisionists empiricists capriciousness injudiciousness recrystallise nutritionists archbishoprics ventriloquists