Words That Rhyme With "Periastron" :

2 syllables:

angstrom, Aston, baston, casten, datsun, estrin, Gaston, gastrin, hamstrung, masten, oestrin, plastron

3 syllables:

alpestrine, apastron, lacustrine

4 syllables:

alabastrine, alabastron, alabastrum, hippeastrum