impalpable

im·pal·pa·ble

adj \(ˈ)im-ˈpal-pə-bəl\

Definition of IMPALPABLE

1

: incapable of being felt by touch <the pulse was impalpable at the wrist> <preoperative localization of impalpable breast lesions—Jane Barrett>

2

: so finely divided that no grains or grit can be felt <an impalpable powder>