distend - Dictionary definition and meaning for word distend
try to relate it with dis means distance and extend means to expand.
This(DIS) Tent(TEND) can expand easily
stend- take it as stem. stem generally expands or swell out ,wen there is a clot of water ..
Imagine DISTance from an END ->Extend;Wider;swell out
TENDancy to DISassociate=DISTEND
Distend-or this tond(belly) has expanded
close to distance...reserved people stay at a distance (secondary meaning of distant is reserved or aloof)
Tendentiousness (tend) towards distant (dis); Therefore reach the distant.