perceptible
adj.
early 15c., "perceptive," from Late Latin perceptibilis "perceptible," from Latin percept-, past participle stem of percipere (see perceive). Meaning "capable of being perceived" is from c.1600. Related: Perceptibly; perceptibility.
〔李〕[percept =to perceive察觉，看见，理解；-ible →] a. that can be perceived；observable；appreciable察觉得到的；看得出的；可领悟的