syntropic
adjective
syn·trop·ic
(ˈ)sin‧,
sən‧+
: repeated symmetrically without being reversed
syntropic ribs
—opposed to antitropic 
Word History
Etymology
syn- + -tropic
- seismic
- seismic sea wave
- seismic shift
- seismic vertical
- seismically
- seismiccer
- seismiccest
- seismicer
- seismicest
- seismicities
- seismicity
- seismism
- seismisms
- seismo-
- seismochronograph
- seismogram
- seismograms
- seismograph
- seismographer
- seismographers
- seismographic
- seismographies
- seismographs
- seismography
- seismologic