IPA: /pərˈsiːvəbl/
KK: /pərˈsiːvəbl/
Able to be seen, heard, or understood; something that can be noticed or detected.
The changes in temperature were barely perceivable to the naked eye.
Perceivable → It is formed from "per-" (meaning through) and "capere" (meaning to seize or take). The word "perceivable" means something that can be seized or understood through the senses.
Think of 'seizing' something 'through' your senses — that's how you remember that 'perceivable' means something you can sense or understand.